In all cases, hair regrowth may occur even without treatment and even after many years. The National Alopecia Areata Foundation was founded in 1981 when a young Californian with the disease looked for others to share and understand her problems. It has grown into the world center of alopecia areata information, research, and service. Located in San Rafael, California, the Foundation is governed by a volunteer Board of Directors and has a professional Chief Executive Officer and staff. The Foundation is represented in Washington, D.C., and the Chief Executive Officer and others have testified before Congressional Committees.
Current research suggests that something triggers the immune system to suppress the hair follicle.
It isn't known what this trigger is, and whether it comes from outside the body like a virus, or from inside. Recent research indicates that some persons have genetic markers that may increase their susceptibility to develop alopecia areata. Yes, heredity plays a role. In one out of five persons with alopecia areata, someone else in the family also has it. Those who develop alopecia areata for the first time after the age of thirty years have less likelihood that another family member will have it.