- Acquired generalized hypertrichosis may be caused by cancer. The resulting hair growth is known as malignant down. The mechanism behind cancer induced hypertrichosis is unknown.
- Acquired generalized hypertrichosis commonly affects the cheeks, upper lip, and chin. This form also affects the forearms and legs; however, it is less common in these areas. Another deformity associated with acquired generalized hypertrichosis is multiple hairs occupying the same follicle.