Alopecia areata is a form of hair loss from areas of the body, usually from the scalp . Because it causes bald spots on the head, especially in the first stages, it is sometimes called spot baldness. Alopecia areata affects both males and females. This type of hair loss is different than male pattern baldness, an inherited condition. Alopecia areata is one type of hair loss. The exact number of people affected by alopecia areata is not known. Estimates vary between 1 in 1000 to 2 in 100 people being affected at some point in their life. Alopecia areata can occur at any age but most cases first develop in teenagers and children. In about 6 in 10 cases the first patch of hair loss develops before the age of 20 years. Causes Alopecia is not contagious. It is an autoimmune disease in which the bodys immune system attacks itself, in this cas hair loss remedy e, the hair follicles. Alopecia areata may occur in more than one member of the family, and such families may develop other autoimmune diseases such as pernicious anaemia and vitiligo. It is also more common in patients with chromosomal disorders such as Down syndrome. Symptoms of Alopecia The primary symptom of alopecia areata is roundish patches of hair loss on the head, with smooth, hairless scalp in the affected areas. Alopecia totalis involves the complete loss of all scalp hair, and alopecia universalis is characterized by the complete loss of all scalp and body hair. Treatment Topical Minoxidil Topically applied rninoxidil 5% solution is helpful in reducing the rate of hair loss or in partially restoring lost hair in some patients; in large clinical trials, moderate growth has been noted at 4 and 12 months in 40% of males.