The course of typical alopecia areata is not predictable with a high likelihood of spontaneous remission. The longer the period of time of hair loss and the larger the area involved, the less likely the hair will regrow spontaneously. Therefore, there are a variety of treatments, but none of these can confidently be predicted to impact the course of this disease. Steroid injections may be very helpful in restarting the hair growth cycle in treated areas. Steroid creams, lotions and shampoos have been used for many years but are of limited benefit at best.
There are a few different reasons why cats can lose hair. In older cats diagnosed with cancer , alopecia is common. Nervous disorders (., over-grooming) can also cause cats to lose their hair. Hormonal imbalances, specifically too much thyroid or increased levels of steroids in the body, may lead to hair loss. Some cats experience skin allergies, which can also cause hair loss to occur. Parasites that bring about mange , and fungal issues like ringworm, are also a common cause of alopecia. Another less common factor is heredity .
A common hair loss condition, alopecia areata , usually starts as a single quarter-sized circle of perfectly smooth baldness . Alopecia patches often regrow in three to six months without treatment. Sometimes, hair regrows in white coloration. In another variant, alopecia areata can produce two or three bald patches. When these grow back, they may be replaced by others. The most extensive form of hair loss is called alopecia totalis, in which the entire scalp becomes bald. It's important to emphasize that patients who have localized hair loss generally don't lose hair throughout the scalp. Alopecia can affect hair on other parts of the body, too (for example, the beard).