What’s a pinna hematoma?

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An auricle hematoma is a blood-filled mass on the outside of the ear. The condition often results from an ear injury, as can often occur during sports such as wrestling or soccer or during high-impact accidents. Symptoms typically include swelling, discoloration, itching, and pain. While the disorder most frequently appears in veterinary offices, it can also impact humans.

Hematomas in general are thick blisters, masses, or spaces filled with blood. There are many classifications, the most serious being the various types of hematomas located around the brain. Hematomas can also appear on various other parts of the body, most of which are under the skin. A fin hematoma, while annoying, is typically a benign, but long-term type.

The auricle itself, also known as the pinna, is the part of the outer ear that most would refer to as a flap. Found on many mammals, the appendage helps animals discriminate between different sounds entering the ear. When you suffer an injury to this area, separation of the connective tissues of the ear can occur. This action can burst blood vessels, thus forming the hematoma. A common way to sustain this injury is with a blow to the head, which is why wrestlers or other participants in high-impact sports often experience this injury.

The symptoms of a hematoma of the auricle are easily distinguishable. A lump inside the pinna is the most obvious indicator, which will often look like a small water balloon. Sometimes, the hematoma will also facilitate new cartilage growth, leading to a bumpy lump called a cauliflower ear or wrestler’s ear. Other expected symptoms include a bluish swelling around the affected area associated with possible pain or itching.

The development of an auricular hematoma can also impact non-human mammals. Since cats and dogs are more prone to rough play and exploration, these pets are perhaps the ones most likely to suffer these types of injuries. Itchy ear mites or allergies can also lead to a hematoma, due to the irritation caused by the pet scratching. Pets are more likely to scratch or paw at the ear after it has been injured, and in the process make the injury worse, which is why it’s important to treat any issues causing the irritation. Poorly treated pinna hematomas can leave scar tissue or even shrink the pinna.

Fin hematomas usually resolve over time. Draining the hematoma and getting steroid treatments from a doctor can ease symptoms. More severe cases may require surgery. In the case of auricle hematoma in pets, an concerned owner should prevent the affected animal from further aggravating the hematoma through scratching. If symptoms persist, a visit to the vet may also be necessary.

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