Alopecia areata is an autoimmune condition that causes sudden hair loss, typically in small, round patches on the scalp, though it can affect other areas of the body as well. It occurs when the immune system mistakenly attacks hair follicles, disrupting hair growth. The condition can affect people of all ages and genders and may lead to complete hair loss in severe cases, known as alopecia totalis or alopecia universalis. While the exact cause is unknown, genetic and environmental factors may play a role.AT LUSH SKIN & HAIR CLINIC WE TREAT ALOPECIA IN BEST WAY IN SHAHEEN BAGH , ABUL FAZAL & JASOLA.