A practical guide to aural hematomas in dogs, covering sudden ear-flap swelling, underlying ear disease, drainage, surgery, recovery and recurrence prevention.

Seek urgent help when

The swelling followed major trauma or a dog fight
The dog has head tilt, falling, rapid eye movements or loss of balance
There is uncontrolled bleeding, severe pain or a rapidly expanding ear
The ear canal has foul discharge and the dog is feverish or very unwell
A surgical incision opens, becomes hot or drains pus

What an aural hematoma is

The pinna contains skin, cartilage and small blood vessels. Repeated shaking or scratching can rupture vessels and separate tissue planes, creating a fluctuant swelling. Over time, clotting, inflammation and scar formation can make the ear thick and distorted.

Hematomas are often secondary to otitis externa, allergy, ear mites, a grass awn, skin disease or trauma. Treating only the swelling misses the reason the dog keeps damaging the ear.

What pet parents notice

Early swelling

A soft, warm, fluid-filled bulge affecting part or most of the ear flap. The dog may hold the ear differently.

Chronic change

The swelling becomes firmer as clot and scar tissue organise. The ear may wrinkle or thicken.

Underlying ear disease

Head shaking
Scratching
Odour
Brown, yellow or bloody discharge
Pain when the ear is touched

Behaviour

Pain may cause sleep disruption, avoidance, irritability or a bite during handling.

Veterinary examination

The veterinarian examines both ear flaps and canals, performs ear cytology and checks for mites, foreign material, infection, canal narrowing and allergy. Sedation may be required when pain prevents safe examination. A mass or unusual lesion may require sampling.

Treatment options

Approach	How it works	Limitations
Surgical drainage and sutures	Opens and drains the cavity, then apposes tissue surfaces with multiple sutures	Requires anaesthesia and aftercare but commonly provides reliable drainage
Drain or cannula techniques	Maintains drainage while surfaces heal together	Can dislodge or become infected; needs monitoring
Needle aspiration	Removes fluid through a needle	Frequently refills when used alone
Selected medical management	May combine aspiration, local medication or systemic anti-inflammatory treatment in appropriate cases	Not suitable for every dog; recurrence and cosmetic outcome vary

ACVS describes surgical drainage with multiple sutures as a common approach. The surgeon may bandage the ear to the head, leave an incision open for continued drainage or use a protective collar.

Important: Never cut, pierce or tightly compress the ear at home. Ear-flap tissue has a rich blood supply, and uncontrolled procedures can cause severe pain, infection and permanent damage.

Treat the reason the dog shook its head

Ear cytology and eardrum assessment before choosing drops
Treatment of bacteria or yeast based on findings
Parasite control when mites are present
Investigation of recurrent allergy or food-responsive disease
Removal of foreign material when identified
Drying and grooming changes for dogs with recurrent wet ears

Recovery after treatment

Keep the Elizabethan collar on continuously if prescribed.
Give pain relief and other medicines exactly as directed.
Check the bandage, drain or incision at least twice daily.
Prevent running, rough play and vigorous head shaking.
Keep the ear dry unless cleaning is specifically prescribed.
Attend rechecks for drain removal, suture removal and ear-canal reassessment.

Call the clinic if the ear becomes suddenly larger, develops a bad smell, bleeds continuously or the dog stops eating. Sutures may remain for weeks depending on healing.

Preventing recurrence

Recurrence usually means continued trauma or incomplete control of ear disease. Dogs with chronic allergic otitis need a maintenance plan rather than repeated emergency drops. Grooming facilities should stop and refer when an ear is painful, swollen or discharging rather than cleaning aggressively.

Practical considerations in India

Monsoon humidity, swimming, wet bathing, dust and grass awns can contribute to ear flares. However, routine pouring of oils, vinegar, antiseptics or powders into ears can worsen irritation and obscure cytology. Keep a written ear-care plan for boarding and grooming.

Dogsvilla practical tip: Before any bath, Dogsvilla staff should inspect both pinnae. A new soft swelling, head tilt or painful ear means no grooming manipulation and immediate owner notification.