Cats may begin balding for many reasons, some of which are harmless and others which may be more serious. Cats can be afflicted with disorders as diverse as pattern baldness, infections, or psychogenic alopecia.
Allergies
Feline allergies are most obvious on the skin of the animal, causing itching and swelling that can cause your cat to lick or scratch themselves raw. The constant irritation to the skin can cause hair to be dislodged or weakened and may lead to bald patches. Environmental and contact allergies are often diagnosed using intradermal skin tests whereas food allergies are diagnosed by employing an elimination diet.
Endocrine Dysfunction
Certain dysfunctions of the endocrine system can cause a cat’s hair to fall out. Both hyperthyroidism and hypothyroidism can cause skin damage and hair loss. Hyperadrenocorticism, better known as Cushing’s disease, is also an illness known to cause loss of hair, usually starting in the abdominal area.
Parasites
One of the more common causes of loss of hair and balding in felines is infestation by parasites. Some of the frequent parasites that cause hair loss include fleas, mites, and lice and treatment is required as leaving infestations untreated may lead to skin infections and anemia.
Pattern Baldness
Pattern baldness is a condition that afflicts cats as well as humans and usually is uncomplicated and painless. Cats with pattern baldness usually lose their hair in an oval pattern that sits between the bases of the ears and out towards the eyes
Psychogenic Alopecia
This disorder is generally considered a behavioral or emotional disorder and is characterized by overgrooming, or grooming which causes the loss of hair and is prioritized over other activities. This condition is often triggered by recent environmental changes or chronic stress in the animal’s life.
Ringworm
Although ringworm sounds like a parasite, it is actually an infection caused by a fungus that attacks the skin. The bald spots caused by this disease are ring-shaped and often have flaky, crusty skin underneath.