Hair diseases square measure disorders primarily related to the follicles of the hair. several hair diseases are often related to distinct underlying disorders. Hair sickness might ask excessive shedding or hairlessness (or both). hairless are often localised or diffuse, scarring or non-scarring. redoubled hairs are often thanks to secretion factors (hirsutism) or non-hormonal (hypertrichosis). Scalp disorders might or might not be related to hair loss.

Hypertrichosis is associate degree abnormal quantity of hair growth over the body. the 2 distinct varieties of hypertrichosis square measure generalized hypertrichosis, that happens over the whole body, and localized hypertrichosis, that is restricted to a definite space. Hypertrichosis are often either inherent (present at birth) or nonheritable later in life. the surplus growth of hair happens in spaces of the skin with the exception of androgen-dependent hair of the bone area, face, and axillary regions. many circus sideshow performers within the nineteenth and early twentieth centuries, like Julia Pastrana, had hypertrichosis. several of them worked as freaks and were promoted as having distinct human and animal traits.

 Two methods of classification are used for hypertrichosis. One divides them into either generalized versus localized hypertrichosis, while the other divides them into congenital versus acquire.

Regards
 Sandra Jones
Associate Managing Editor
Hair Therapy and Transplantation