Alopecia is loss of hair from areas of the body where hair is usually found. This is so for hair loss in canine skin disorders and is as a result of a disease called alopecia areata which attacks the hair follicles. In canine skin disorders, this is the part of the skin where hair grows and falls out at the size of a quarter in round patches. Also known as an autoimmune disease there is a very interesting fact about alopecia (hair loss) which forms part of canine skin disorders. Under normal circumstances the immune system protects the body against illness, however in alopecia the immune system attacks its own body (by error) in this case hair follicles causing hair to fall out. Scientists do not know the cause of this, however have listed that “genes” may play a role in canine skin disorders.