How much do you know about alopecia? Did you know, for example, that there are different forms of alopecia? For instance, alopecia areata is a condition where the hair falls out in small patches. The patches can connect to make someone fully bald. Essentially, the condition forms when the immune system attacks hair follicles. This hair loss can not only occur on the scalp, but the face and other parts of the body as well.
To learn more about alopecia and discover the other celebrities who have dealt with it, click through this gallery.