1、What is an Aural Haematoma
The skin or pinnae of the ear is made up of two layers of opposing skin held together with fibrous tissue and with nerves and blood vessels running between the them. An aural haematoma (blood blister of the ear) forms when one or more of these vessels rupture and the leaking blood pockets in the space between the two layers of skin.
2、What causes them to form?
This damage to the blood vessels may be caused by any form of trauma. The most common cause of aural haematomas isfrom shaking the head, however trauma from a bite or are also possible. Earinfections, mites, inflammation and foreign objects can be very uncomfortableand your pets reaction would probably be to shake its head or scratchvigorously at the ear. This ‘self-abuse’ can very easily damage the fragileblood vessels within the pinna and cause an aural haematoma to form.
3、How are they treated?
Various differing approaches may be tried in the treatment of aural haematomas. Ifthere is only a mild swelling and there are other complicating factors (likeold age or other ongoing disease problems) then your vet may suggest a courseof medication and leaving the haematoma to be partially resorbed with time.
Most cases, however, go on to require surgery. This involves giving your pet a fullgeneral anaesthetic, draining the fluid from the pinna and then suturing thetwo flaps of skin together. This approach allows your vet to remove all of thefluid, and suturing the two layers together forms a strong fibrous bond betweenthe two and helps to prevent a recurrence.
With any of the possible treatment options, your vet may also have to addressany underlying causative factors like ear mites, infection and foreign objects.Dealing with these problems makes treating the haematoma much more likely to bea successful, permanent solution to this uncomfortable and unsightly condition.