Ear Mites in Cats: Signs, Treatment and How to Prevent Them

By Dr Duncan Houston

Quick Answer

Ear mites are highly contagious parasites that live in the ear canal and cause intense itching, dark discharge, and inflammation. They are most common in kittens and multi-pet households, and require proper treatment for all animals in contact.

As a veterinarian, ear mites are one of the most common causes of severe ear irritation in young cats, and early treatment helps prevent secondary infection and ongoing discomfort.

If your cat is constantly scratching their ears or shaking their head like something is stuck inside, ear mites are a strong possibility.

They are tiny, but they cause a lot of irritation. The good news is they are very treatable once identified.

What Are Ear Mites?

Ear mites are microscopic parasites that live in the ear canal.

They:

• Feed on skin debris and wax

• Cause intense irritation

• Multiply quickly

• Spread easily between animals

They are especially common in kittens, rescue cats, and households with multiple pets.

Signs of Ear Mites in Cats

Cats with ear mites are usually very itchy.

Common signs include:

• Frequent scratching at the ears

• Head shaking

• Tilting the head

• Dark brown or black discharge that looks like coffee grounds

• Red or inflamed ears

• Hair loss or scabs around the ears

Some cats become very uncomfortable and sensitive around the head.

Why Ear Mites Spread So Easily

Ear mites are highly contagious.

They can spread through:

• Direct contact between pets

• Shared bedding or grooming tools

• Close living environments

If one pet has ear mites, it is very likely others in the household may also be affected.

How Vets Diagnose Ear Mites

Diagnosis is usually straightforward.

Ear Examination

Your vet will examine the ear canal for signs of inflammation and discharge.

Microscopic Testing

A sample of ear debris is examined under a microscope to confirm the presence of mites.

In heavy infestations, mites may sometimes be visible without magnification.

Treatment Options

Treatment is effective, but it must be thorough.

Spot-On Parasite Treatments

These are commonly used and highly effective.

They:

• Kill ear mites systemically

• Help prevent reinfection

• Are easy to apply

Topical Ear Medications

In some cases, direct ear treatment may be recommended.

These:

• Target mites within the ear canal

• May require repeated applications

• Are sometimes used alongside other treatments

Treat All Pets in the Household

Even if other pets are not showing signs, they should usually be treated.

This prevents the cycle of reinfection.

Home Care During Treatment

Supporting treatment at home helps speed recovery.

Clean the Environment

• Wash bedding regularly

• Clean grooming tools

• Vacuum areas where pets rest

Gentle Ear Cleaning

• Use a vet-approved ear cleaner

• Avoid harsh products

• Do not insert anything deep into the ear canal

Cleaning helps remove debris and improve comfort, but should be done carefully.

What Not to Do

• Do not use random over-the-counter treatments

• Do not use harsh chemicals or home remedies

• Do not insert cotton buds deep into the ear

• Do not treat only one pet if others are in contact

Incorrect treatment often prolongs the problem.

How to Prevent Ear Mites

Prevention focuses on reducing exposure and maintaining regular parasite control.

Routine Parasite Prevention

Use appropriate preventative treatments as recommended by your vet.

Check New Pets

• Isolate new animals initially

• Check ears before introducing them to others

Regular Monitoring

• Watch for early signs of scratching or discharge

• Address issues early before they spread

When to See a Vet

You should seek veterinary care if:

• Your cat is scratching persistently

• There is dark discharge in the ears

• The ears are red, swollen, or painful

• Symptoms are not improving

• Multiple pets are affected

Early treatment prevents complications.

Potential Complications if Left Untreated

If not treated, ear mites can lead to:

• Secondary bacterial or yeast infections

• Severe inflammation

• Pain and sensitivity

• Damage to the ear canal

• In rare cases, eardrum injury

The longer they are left, the more uncomfortable your cat becomes.

Final Thoughts

Ear mites are small parasites, but they cause significant irritation.

The good news is that they are very manageable with the right treatment. The key is recognising the signs early, treating all affected animals, and preventing reinfection.

FAQs

Can indoor cats get ear mites?
Yes. Ear mites spread easily between animals and can be brought into the home through contact or shared environments.

Can humans catch ear mites from cats?
It is very uncommon. Mites do not typically survive on humans, but temporary irritation can occur in rare cases.

Are ear mites dangerous?
They are not usually life-threatening, but they can cause significant discomfort and lead to secondary infections if left untreated.

If your cat is showing signs of ear irritation, tracking symptoms and response to treatment can help ensure the problem is fully resolved. The ASK A VET™ app can help you monitor progress and decide when further care is needed.