![]() These all cause discomfort and irritation within the ear, which leads pets to vigorously shake their heads, rub and scratch at their ears. #CANINE AURAL HEMATOMA SKIN#That said, irritation can also be caused by an allergic skin disease or by a foreign body (often a grass awn) that’s gotten stuck in the ear canal. Many pets have an associated ear infection (known as otitis) caused by bacteria, fungi, or parasites known as ear mites. Whenever we see a pet with an aural haematoma, we must look for the underlying cause, otherwise the problem is likely to recur despite appropriate treatment for the haematoma. The blood vessels are broken by trauma, normally from excessive head-shaking, rubbing or scratching at the ear. ![]() This creates a misshapen ear pinna, not dissimilar to the so-called cauliflower ear that we may see in rugby players. In chronic or untreated aural haematomas, what can happen is that the fluid components eventually reabsorb, but some abnormal tissue or fibrin remains and the skin and cartilage knit back together with this fibrous scar tissue in between. This creates the typical soft, fluid swelling within the ear pinna that we associate with acute aural haematomas. With an aural haematoma, some of the blood vessels break open and bleed, allowing blood and tissue fluid to accumulate between the skin and the cartilage. ![]() The ear pinna, which is the outside ear flap, is made up of cartilage sandwiched between two pieces of skin. So, an aural haematoma is a collection of blood in the ear. The clue is in the name ‘aural’ means ear-related, whilst a ‘haematoma’ is a collection of blood somewhere inside the body that it shouldn’t be, often because of trauma. ![]()
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