A noncongenital process of hair loss, which may progress to partial or complete baldness.

Absence of hair from areas where it is normally present.

Baldness; absence of hair from skin areas where it is normally present.

Hair loss usually from the scalp. It may result in bald spots or spread to the entire scalp or the entire epidermis. It may be androgenetic or caused by chemotherapeutic agents, compulsive hair pulling, autoimmune disorders or congenital conditions.

The lack or loss of hair from areas of the body where hair is usually found. Alopecia can be a side effect of some cancer treatments.

(hair loss) Loss of hair usually from the scalp that may result in bald spots or spread to the entire scalp or epidermis.

(hair loss) You lose up to 100 hairs from your scalp every day. That's normal, and in most people, those hairs grow back. But many men -- and some women -- lose hair as they grow older. You can also lose your hair if you have certain diseases, such as thyroid problems, diabetes, or lupus. If you take certain medicines or have chemotherapy for cancer, you may also lose your hair. Other causes are stress, a low protein diet, a family history, or poor nutrition. Treatment for hair loss depends on the cause. In some cases, treating the underlying cause will correct the problem. Other treatments include medicines and hair restoration.

A disorder characterized by a decrease in density of hair compared to normal for a given individual at a given age and body location.

Alopecia is defined as loss of hair from the body. Hair loss is often a cause of great concern to the patient for cosmetic and psychologic reasons, but it can also be an important sign of systemic disease.

Hair loss (alopecia) can affect just your scalp or your entire body, and it can be temporary or permanent. It can be the result of heredity, hormonal changes, medical conditions or a normal part of aging. Anyone can lose hair on their head, but it's more common in men.

Baldness, the lack or loss of hair. Two primary types of baldness can be distinguished: permanent hair loss, arising from abnormalities in or destruction of hair follicles, and temporary hair loss, arising from transitory damage to the follicles. The first category is dominated by male pattern...