Does flea medicine kill ear mites effectively

Does flea medicine kill ear mites, a question that dances on the edge of a pet owner’s concern, setting the stage for a revelation. It’s a puzzle that unfolds with the meticulous detail of a seasoned investigator, revealing truths about those minuscule invaders and the remedies we often reach for in desperation. Prepare for a journey into the microscopic world of our beloved companions, where understanding is the first step towards solace.

The common ear mite, a tenacious parasite, thrives in the warm confines of a pet’s ear canal, its lifecycle a relentless cycle of reproduction and irritation. Observing your furry friend’s incessant scratching, head-shaking, and the tell-tale dark, crumbly discharge are often the first clues that these unwelcome guests have taken up residence. Transmission between pets is as simple as a shared nap or a playful tussle, making vigilance a pet owner’s constant companion.

Under magnification, these tiny arachnids reveal themselves as pale, crab-like creatures, their presence a significant discomfort to our four-legged family members.

Understanding Ear Mites in Pets

Ear mites, scientifically known asOtodectes cynotis*, are tiny external parasites that commonly infest the ear canals of cats, dogs, and other small mammals. These microscopic creatures are a frequent cause of discomfort and irritation for our beloved pets, leading to a range of symptoms that alert owners to their presence. Understanding their lifecycle, how they spread, and their physical characteristics is crucial for effective prevention and treatment.The lifecycle of an ear mite is relatively short but highly efficient, allowing for rapid population growth within the ear.

Adult mites lay their eggs in the ear canal, which hatch into larvae within a few days. These larvae then mature into nymphs, which eventually develop into adult mites. The entire process, from egg to adult, can be completed in as little as three weeks, meaning a mild infestation can quickly become severe if left unaddressed.

Ear Mite Lifecycle and Behavior

The typical lifecycle ofOtodectes cynotis* involves several distinct stages, each contributing to the infestation. Adult mites are most active in the dark, moist environment of the ear canal, where they feed on earwax and skin debris. Their feeding and movement cause significant irritation to the sensitive tissues of the ear.The lifecycle stages include:

Egg: Laid by adult female mites in the ear canal, usually adhering to the cerumen (earwax) or skin.
Larva: Hatches from the egg, typically within 4 days, and is characterized by having six legs. Larvae do not reproduce.
Nymph (Protonymph and Deutonymph): The larval stage molts into a nymphal stage, which has eight legs. Nymphs feed and develop, eventually molting into adults. This stage can last for several weeks.
Adult: The final stage, characterized by eight legs and reproductive capability. Adult mites feed on earwax and skin oils, and their constant activity leads to the characteristic itching and discomfort. The lifespan of an adult mite can be up to two months.

The behavior of ear mites is largely dictated by their need for a warm, food-rich environment. They are most active at night, burrowing into earwax and skin flakes. Their presence and the resulting inflammation can cause pets to exhibit a range of behaviors to alleviate the itching.

Common Symptoms of Ear Mites

Pet owners often notice a cluster of symptoms that strongly indicate an ear mite infestation. These symptoms are primarily a response to the irritation and inflammation caused by the mites’ presence and feeding.The most common symptoms include:

Excessive scratching: Pets will frequently scratch at their ears, sometimes vigorously, to relieve intense itching. This can lead to secondary infections or self-inflicted wounds.
Head shaking: Frequent and persistent head shaking is another common sign as pets try to dislodge the irritants from their ear canals.
Ear discharge: A characteristic dark, crumbly discharge, often described as resembling coffee grounds, is a hallmark of ear mite infestations. This discharge is a mixture of earwax, mite debris, and inflammatory exudate.
Redness and inflammation: The inner ear flap and canal may appear red, inflamed, and sensitive to the touch due to the constant irritation.
Odor: In some cases, a foul or yeasty odor may emanate from the affected ear, often a sign of secondary bacterial or yeast infections.
Hair loss: Around the ears and on the face, hair loss can occur due to excessive scratching and rubbing.
Thickened ear flaps: Chronic infestations can lead to thickening and crusting of the ear flaps, especially on the outer edges.

It is important to note that while these symptoms are highly indicative, a definitive diagnosis requires microscopic examination of ear discharge by a veterinarian.

Transmission of Ear Mites Between Pets

Ear mites are highly contagious and can spread rapidly among pets that share living spaces. Their transmission is primarily through direct contact.The main routes of transmission are:

Direct physical contact: This is the most common method. When an infested pet comes into close physical contact with a non-infested pet, mites can easily transfer from one animal to another. This includes nuzzling, grooming, or sleeping in close proximity.
Shared bedding and grooming tools: Although less common than direct contact, mites can survive for a short period off the host. Therefore, sharing bedding, blankets, or grooming tools that have come into contact with an infested pet can also facilitate transmission.
Maternal transmission: Puppies and kittens can be infected by their mothers during birth or shortly after, as mites can be present on the mother’s skin and in her ears.

While

Otodectes cynotis* primarily affects the ears, they can sometimes migrate to other parts of the body, particularly the neck and tail, if the infestation is severe or if the pet has other skin conditions.

Physical Characteristics of Ear Mites

Under magnification, ear mites present a distinct appearance that differentiates them from other common parasites. They are small, white, and crab-like in their movement.When viewed under a microscope, ear mites exhibit the following characteristics:

Size: Adult ear mites are very small, typically measuring around 0.5 to 1 millimeter in length. This makes them difficult to see with the naked eye.
Color: They are generally whitish or pale in color, which can make them blend in with earwax, though their movement often betrays their presence.
Shape: They have a somewhat flattened, oval body with eight legs. The legs are relatively short and equipped with suckers or claws at their tips, which help them cling to the ear canal.
Appearance: Their appearance has been described as somewhat crab-like due to their leg structure and how they move. They do not have wings and cannot fly.
Mouthparts: Their mouthparts are adapted for piercing and feeding on skin debris and earwax.

The characteristic “coffee ground” discharge seen in infested ears is not the mites themselves, but rather a combination of earwax, mite secretions, inflammatory products, and potentially blood from scratching. Microscopic examination of a sample of this discharge is the definitive way to identify the mites and confirm the diagnosis.

Flea Medications and Their Active Ingredients

Understanding the active ingredients in flea medications is paramount when considering their efficacy against various parasites, including ear mites. While many treatments are primarily designed for fleas, some possess broader antiparasitic properties. The effectiveness of a particular medication hinges on its chemical composition and how it interacts with the nervous systems of the target pests.The landscape of flea control is diverse, with a variety of chemical compounds developed to combat these persistent invaders.

These ingredients work through different biochemical pathways to incapacitate and eliminate fleas, and in some cases, other ectoparasites. The specific formulation and target spectrum are crucial considerations for pet owners seeking the most appropriate treatment.

Common Active Ingredients in Flea Treatments

A wide array of active ingredients are utilized in topical and oral flea treatments, each with a distinct mode of action and target pest range. These compounds are the workhorses behind effective flea control, and knowing them can empower informed choices.Here is a list of commonly found active ingredients in flea treatments:

Fipronil: A phenylpyrazole insecticide that disrupts the central nervous system of insects.
Imidacloprid: A neonicotinoid insecticide that acts on the insect’s central nervous system.
Selamectin: A macrocyclic lactone that affects nerve and muscle function in invertebrates.
Moxidectin: Another macrocyclic lactone, similar in action to selamectin.
Dinotefuran: A neonicotinoid that interferes with nerve signal transmission.
Pyrethrins and Pyrethroids (e.g., Permethrin, Cypermethrin): Synthetic or natural compounds that disrupt the nervous system of insects.
Spinosad: A natural substance derived from bacteria that affects the insect’s nervous system.
Amitraz: An insecticide and acaricide that affects nerve function in insects and mites.

Mechanisms of Action of Flea Medication Ingredients

The way these active ingredients work is as varied as their chemical structures. Understanding these mechanisms helps to appreciate why certain ingredients are effective against specific pests. Most of these compounds target the nervous system of the parasite, leading to paralysis and death.The primary mechanisms of action include:

Nerve Signal Disruption: Ingredients like fipronil and imidacloprid block GABA-gated chloride channels in insect neurons. This leads to hyperexcitation of the insect’s nervous system, resulting in paralysis and death. Dinotefuran, another neonicotinoid, works by irreversibly binding to nicotinic acetylcholine receptors, preventing nerve signal transmission.
Muscle Function Impairment: Macrocyclic lactones such as selamectin and moxidectin enhance the effect of GABA and glutamate, which are inhibitory neurotransmitters. This leads to increased chloride ion permeability, hyperpolarization of the nerve and muscle cells, and ultimately, paralysis and death of the parasite.
Nervous System Overstimulation: Pyrethrins and pyrethroids prolong the opening of sodium channels in nerve cell membranes. This causes repetitive firing of the neurons, leading to tremors, paralysis, and death of the insect.
Metabolic Disruption: Spinosad activates nicotinic acetylcholine receptors and inhibits GABA-gated chloride channels, leading to a dual action that disrupts the nervous system.
Neurotransmitter Interference: Amitraz affects octopamine receptors in invertebrates, disrupting neurotransmission and leading to the death of mites and insects.

Pest Spectrum Targeted by Active Ingredients

While developed primarily for fleas, many active ingredients in flea medications have a broader spectrum of activity, affecting other common ectoparasites. This cross-activity is an important consideration when addressing multiple parasite issues.The spectrum of pests targeted by these ingredients varies:

Fipronil: Primarily targets fleas and ticks.
Imidacloprid: Effective against fleas and, in some formulations, ticks, lice, and mosquitoes.
Selamectin: Broad-spectrum, targeting fleas, heartworms, ear mites, sarcoptic mange mites, and certain ticks.
Moxidectin: Primarily used for heartworm prevention but also effective against fleas and some internal parasites.
Dinotefuran: Effective against fleas, ticks, and lice.
Pyrethrins and Pyrethroids: Commonly used against fleas, ticks, lice, and flies.
Spinosad: Primarily targets fleas.
Amitraz: Specifically targets mites (including ear mites and demodectic mites) and ticks.

Forms of Flea Medication Available

Flea medications come in various forms, catering to different pet preferences and owner convenience. The delivery method can influence absorption, onset of action, and duration of effectiveness.The common forms of flea medication include:

Spot-on Treatments: These are liquid formulations applied directly to the pet’s skin, typically between the shoulder blades. The active ingredients spread across the skin or are absorbed into the bloodstream. Examples include products containing fipronil, imidacloprid, selamectin, and dinotefuran.
Oral Chewables: These are flavored tablets or chews that the pet ingests. The active ingredients are absorbed into the bloodstream and then distributed to the skin. Examples include products containing spinosad, fluralaner, and afoxolaner.
Flea Collars: These collars release active ingredients that spread over the pet’s coat. The effectiveness and duration vary greatly depending on the active ingredient and collar technology. Some collars contain pyrethroids or other insecticides.
Shampoos and Sprays: These are topical treatments used for immediate knockdown of fleas and other parasites but often have a shorter residual effect. They commonly contain pyrethrins or permethrin.
Injectables: Some medications, like those for heartworm prevention, are administered via injection and can also offer protection against fleas and other parasites.

Potential Efficacy of Flea Medicine Against Ear Mites

While the primary target of most flea medications is, understandably, fleas, the question of their efficacy against other common ectoparasites like ear mites is a frequent and important one for pet owners. The effectiveness hinges on the active ingredients within the medication and their specific action against the physiology of different parasites.The intricate world of parasitic control is a delicate balance of targeting specific vulnerabilities.

Fleas and ear mites, though both external pests, possess distinct biological blueprints that dictate how they respond to chemical interventions. Understanding these differences is paramount when assessing the broad-spectrum capabilities of any given medication.

While many effective flea medications can indeed target and eliminate ear mites, it’s crucial to understand the safety protocols. A common question arises regarding cross-species application, specifically, can you use dog flea medicine on cats. Always confirm your product’s label to ensure it’s safe for your specific pet and effective for treating ear mites.

Active Ingredients with Acaricidal Properties

Several active ingredients commonly found in flea medications do possess known acaricidal properties, meaning they are effective against mites. These compounds often target the nervous system of arachnids, including mites, or interfere with their development.Key ingredients that demonstrate efficacy against ear mites include:

Selamectin: A macrolide lactone that is a common ingredient in monthly topical flea and heartworm preventatives. It works by disrupting the parasite’s nervous system, leading to paralysis and death. Selamectin is widely recognized for its efficacy against ear mites.
Moxidectin: Similar to selamectin, moxidectin is another macrolide lactone that affects the nervous system of parasites. It is also found in some broad-spectrum parasiticides that can treat ear mites.
Ivermectin: While more commonly associated with heartworm prevention and treatment of other internal parasites, ivermectin can also be effective against ear mites. However, its use for ear mites is often off-label and requires careful veterinary guidance due to potential toxicity in certain breeds.
Amitraz: This is a formamidine acaricide that is a common active ingredient in many ear mite treatments specifically formulated for topical application within the ear canal. It disrupts the nervous system of mites.

Physiological Differences Affecting Medication Effectiveness

The effectiveness of a flea medication against ear mites is significantly influenced by the physiological distinctions between these two types of parasites. Fleas are insects, characterized by six legs and a chitinous exoskeleton, whereas ear mites (likeOtodectes cynotis*) are arachnids, possessing eight legs and a different cuticle structure. These fundamental differences mean that certain chemicals may bind more effectively to specific receptors or pathways present in one group but not the other.For instance, insecticides that target insect-specific neurological pathways might have limited or no effect on mites.

Conversely, acaricides designed to disrupt the nervous systems of arachnids may be effective against both fleas and mites if the active ingredient has a broad enough spectrum of action. Furthermore, the location and life cycle of these parasites play a role. Fleas spend much of their life cycle in the environment and on the host’s fur, while ear mites reside deep within the ear canal.

This difference in habitat can influence how a medication is absorbed and delivered to the target parasite.

Flea Medications Specifically Labeled for Ear Mite Treatment

While many flea medications offer broad-spectrum protection, only a select few are explicitly labeled for the treatment of ear mites. These medications often contain active ingredients with proven acaricidal properties and are formulated for direct application to the ear or in a manner that ensures systemic absorption to reach the ear canal.Examples of product types that may be labeled for ear mites include:

Specific Ear Drops/Solutions: These are the most common and direct treatments, containing ingredients like selamectin, moxidectin, or amitraz. They are designed to be instilled directly into the ear canal.
Monthly Topical Preventatives: Some broad-spectrum topical treatments that prevent fleas, heartworms, and other parasites are also indicated for the treatment of ear mites. Selamectin-based products are often in this category.

It is crucial to consult the product label and a veterinarian to confirm if a particular flea medication is approved and recommended for ear mite treatment in your pet.

Concentration and Dosage Considerations for Targeting Ear Mites

When a flea medication is used off-label or has a dual indication for both fleas and ear mites, the concentration and dosage become critical factors. The concentration of the active ingredient required to eliminate ear mites may differ from that needed to control a flea infestation. Ear mites reside in a specific, often sensitive, environment (the ear canal), and the dosage must be sufficient to eradicate them without causing local irritation or systemic toxicity.

Dosage for ear mites must be precisely calculated based on the pet’s weight and the specific active ingredient’s efficacy against mites, which may differ from flea control protocols.

Veterinary guidance is indispensable in determining the correct concentration and frequency of administration. For instance, a topical flea treatment might be applied to the back of the neck, and its systemic absorption is relied upon to reach the ear. In such cases, the concentration of the active ingredient in the blood must be sufficient to also affect the mites. Conversely, direct ear treatments use higher local concentrations of specific acaricides.

Over- or under-dosing can lead to treatment failure, resistance development, or adverse reactions, underscoring the importance of professional veterinary advice for accurate dosing.

Methods of Ear Mite Treatment

Effectively tackling ear mites requires a multi-pronged approach, blending meticulous cleaning with targeted medicinal intervention. It’s not simply about applying a product; it’s about understanding the lifecycle of these tiny invaders and ensuring their complete eradication to restore your pet’s comfort and ear health. This section will guide you through the essential steps for a successful treatment regimen.

Risks and Side Effects of Using Flea Medicine for Ear Mites

While the allure of a single solution for multiple pest problems is understandable, applying flea medication to treat ear mites is a path fraught with potential peril. These products are formulated with specific targets and delivery mechanisms in mind, and deviating from their intended use can lead to a cascade of adverse reactions. It is crucial to approach any treatment, especially within the delicate confines of a pet’s ear, with caution and a thorough understanding of the risks involved.When flea medications are used for purposes other than their intended application, particularly in sensitive areas like the ear canal, the consequences can range from mild discomfort to severe health issues.

The active ingredients designed to combat external parasites on the skin or in the bloodstream may have entirely different and harmful effects when introduced into the ear.

Potential Adverse Reactions from Off-Label Use

Using flea medications not specifically formulated for ear mites can trigger a spectrum of negative responses. These medications often contain potent chemicals designed to penetrate the skin or be absorbed systemically. When applied to the ear, these same chemicals can irritate the delicate ear canal lining, leading to inflammation, redness, and pain. Some topical flea treatments, if ingested by the pet through licking, can cause systemic toxicity.

Oral flea medications, while less likely to cause direct ear irritation, may not achieve therapeutic concentrations within the ear canal to effectively treat mites, and their systemic absorption can still lead to side effects such as vomiting, diarrhea, or lethargy.

Importance of Veterinary Consultation

Before considering any off-label use of flea medication for ear mites, consulting a veterinarian is not just recommended; it is imperative. A veterinarian can accurately diagnose the presence of ear mites, differentiate them from other ear conditions, and prescribe a treatment specifically designed for the ear canal. They understand the delicate anatomy of the ear and the potential toxicity of various chemicals.

Using a medication without professional guidance is akin to performing a complex medical procedure without the necessary training or tools, risking harm to the animal.

Risks of Incorrect Dosage or Application in the Ear Canal

Administering flea treatments into the ear canal carries significant risks due to the sensitive nature of this area. Overdosing a topical flea treatment in the ear could lead to chemical burns or severe irritation. Conversely, an insufficient dose might prove ineffective, prolonging the pet’s discomfort and allowing the mite infestation to worsen. Furthermore, applying the medication too deeply or forcefully can damage the eardrum or other delicate structures within the ear.

The viscous nature of some flea treatments may also not be suitable for the ear, potentially trapping debris or moisture, creating an environment conducive to secondary bacterial or fungal infections.

Safety Profiles of Flea Medications for Ear Mite Treatment

The following table illustrates the potential risks associated with using different types of flea medications for ear mite treatment, highlighting why veterinary guidance is paramount.

Medication Type	Potential Risk	Severity	Notes
Topical Flea Spot-on	Systemic absorption, localized irritation, potential for ototoxicity if absorbed into the middle ear	Mild to Moderate, potentially Severe if systemic absorption is high or ototoxicity occurs	Designed for skin and fur; absorption into the ear canal can be unpredictable. Licking off the product can lead to ingestion and systemic effects.
Oral Flea Chewable	Gastrointestinal upset, potential systemic side effects (e.g., neurological symptoms in sensitive individuals), ineffective for direct ear mite treatment	Mild to Moderate	Works systemically; does not directly target mites in the ear canal. May not reach therapeutic levels in the ear.
Ear Specific Mite Treatment	Local irritation, secondary infection if ear is not properly cleaned prior to application, potential for allergic reaction	Mild to Moderate	Formulated for direct application in the ear canal; generally safe when used as directed by a veterinarian. Proper cleaning is essential.

When to Seek Veterinary Guidance

While the temptation to treat ear issues at home is understandable, especially with readily available over-the-counter options, certain signs strongly suggest that professional veterinary attention is not just beneficial, but essential. Early and accurate diagnosis is paramount for effective treatment and to prevent potential complications.Understanding the specific nature of an ear problem is the cornerstone of successful treatment. Ear mites, while common, are not the only cause of discomfort or discharge in a pet’s ears.

Other conditions, such as bacterial or yeast infections, allergies, foreign bodies, or even more serious issues like polyps or tumors, can mimic the symptoms of ear mites. Administering the wrong treatment can be ineffective at best and harmful at worst, potentially exacerbating the underlying problem or causing new ones.

Indications for Professional Veterinary Diagnosis

Several observable signs in your pet’s ears warrant a visit to the veterinarian. These symptoms can signal a condition that requires expert evaluation and treatment beyond what over-the-counter remedies can safely provide.

Persistent or severe itching and scratching of the ears or head.
Excessive head shaking, often with force.
Visible discharge from the ear canal, which can vary in color (black, brown, yellow, or green) and consistency (waxy, pus-like, or watery).
A foul or unpleasant odor emanating from the ear.
Pain or sensitivity when the ears are touched or when the pet is handled around the head.
Redness, swelling, or inflammation of the ear canal or the outer ear flap.
Changes in balance or coordination, such as tilting the head or loss of equilibrium.
Hearing loss or a noticeable decrease in responsiveness to sounds.
Any discharge or symptoms that persist for more than a few days despite initial home care attempts.

The Importance of Proper Ear Problem Identification

The efficacy of any treatment hinges on its accuracy. Treating for ear mites when the issue is a bacterial infection, for example, will not resolve the problem and could lead to a worsening of the infection. This is why professional identification is so crucial. A veterinarian can differentiate between various ear ailments, ensuring that the treatment plan is specifically tailored to the diagnosed condition.

“Accurate diagnosis is the first and most critical step in effective pet ear care.”

Veterinary Diagnostic Tools for Ear Mites

Veterinarians employ several reliable methods to definitively confirm the presence of ear mites and to assess the overall health of the ear canal. These tools allow for a precise diagnosis, guiding the subsequent treatment strategy.A veterinarian will typically begin with a thorough physical examination of the pet, paying close attention to the ears. This is followed by otoscopic examination, where a specialized instrument called an otoscope is used to visualize the ear canal.

The otoscope has a light and magnifying lens, allowing the veterinarian to see deep into the ear canal, observe the ear drum, and identify any abnormalities, inflammation, or the presence of mites or their debris.

“Microscopic examination of ear debris is the gold standard for ear mite identification.”

If ear mites are suspected, the veterinarian will collect a sample of ear discharge or debris. This sample is then examined under a microscope. Ear mites, even in small numbers, are readily identifiable under magnification. This direct visualization confirms their presence and allows the veterinarian to differentiate them from other ear debris.In cases where secondary infections are suspected, the veterinarian may also collect samples for cytology (examining cells under a microscope to identify bacteria or yeast) or bacterial culture and sensitivity testing.

This helps determine the specific type of infection and the most effective antibiotics or antifungals to use.

Benefits of a Veterinarian-Prescribed Treatment Plan, Does flea medicine kill ear mites

Once an accurate diagnosis is established, a veterinarian can prescribe a treatment plan that is both safe and highly effective. These plans are customized to the individual pet’s needs, the severity of the condition, and the specific pathogen or parasite involved.Veterinarian-prescribed treatments for ear mites often involve specialized ear drops or ointments that are specifically formulated to kill mites and reduce inflammation.

These medications are generally more potent and targeted than over-the-counter alternatives. Furthermore, a veterinarian can provide guidance on the correct dosage, frequency, and duration of treatment, which is crucial for eradicating the mites completely and preventing re-infestation.Beyond direct mite treatment, a veterinarian can also address any secondary infections that may have developed due to the ear mite infestation. This often involves prescribing antibiotics or antifungal medications, ensuring a comprehensive approach to healing.

They can also offer advice on preventative measures and proper ear cleaning techniques to maintain ear health and minimize the risk of future problems.

“A veterinarian’s expertise ensures a targeted, safe, and comprehensive approach to resolving ear mite infestations and associated issues.”

Closing Summary

In the intricate dance between pet health and the remedies we employ, the question of whether flea medicine can conquer ear mites leads us to a crucial understanding. While some flea medications may offer a degree of overlap in their efficacy, the specialized nature of ear mite infestations often demands a more targeted approach. The true resolution lies not in guessing, but in informed action, a testament to the profound bond we share with our pets and our commitment to their well-being.

FAQ Resource: Does Flea Medicine Kill Ear Mites

Can I use flea drops in my pet’s ears?

It is strongly advised against applying topical flea treatments directly into your pet’s ear canal unless specifically directed by a veterinarian. The delicate tissues of the ear can be easily irritated or damaged by ingredients not intended for internal ear use, potentially leading to more severe problems than the initial mite infestation.

Are all ear mites the same?

While the most common ear mite is
-Otodectes cynotis*, which affects both cats and dogs, there are other less common types of mites that can infest a pet’s ears. Proper veterinary diagnosis is essential to ensure the correct treatment is administered, as different mites may require different therapeutic approaches.

How long does it take for ear mites to die if treated?

The duration of treatment for ear mites typically spans a few weeks. This is because treatments need to kill not only the adult mites but also any newly hatched eggs to break the mite’s lifecycle. Consistent application of the prescribed medication is key to complete eradication.

Can humans get ear mites from their pets?

While it is rare, humans can contract ear mites from pets. This usually results in a temporary, itchy rash rather than a full-blown ear infestation. If you suspect you’ve been exposed, consult a medical professional.