Alopecia Areata – Hair Loss, Baldness, Ganja Pan in urdu, Alopecia areata is characterised by sudden patchy loss of hair, which is due to many follicles prematurely and rapidly entering the telogen phase. The cause of Alopecia Areata is still unknown but this type of Alopecia falls into the category of autoimmune disorders. Alopecia Areata is relatively common in Pakistan and can affect as many as one person in a thousand at some time in their life. Occasionally Alopecia Areata becomes very widespread and severe and develops into Alopecia Totalis or Alopecia Universalis. Alopecia Areata is considered by someone to have an autoimmune mechanism but there may be an external trigger such as a sudden shock or extreme stress. For More information about Alopecia Areata watch video by clicking on read more.