They are also worn by individuals who are experiencing Wigs hair cataclysm due to medical reasons (most commonly cancer patients who are undergoing chemotherapy or those who are suffering from alopecia areata). In men, the most common cause of baldness is "male-pattern baldness" and this is probably the most habitual reason for wig-wearing in this group. The post-menopausal diffuse baldness of women, while more common than generally realized, is usually not severe enough to warrant the wearing of a wig.