If you that question... here is the answer

Alopecia areata (AA) is a condition affecting humans, in which hair is lost from some or all areas of the body, usually from the scalp. Because it causes bald spots on the scalp, especially in the first stages, it is sometimes called spot baldness. In 1%–2% of cases, the condition can spread to the entire scalp (Alopecia totalis) or to the entire epidermis (Alopecia universalis). Conditions resembling AA, and having a similar cause, occur also in other species.
Alopecia areata is noncommunicable, or not contagious ( so do not be afraid I might bite you ).
http://en.wikipedia.org/wiki/Alopecia_areata
There are some others like me, and we all are perfectly normal, apart form having less hair You could choose to wear a wig or to accept it as part of yourself. To be honest I can't see myself with hair.