Excessive growth of terminal hair in areas not normally hairy. It is usually associated with the use of certain drugs like corticosteroids, diazoxide, minoxidil.
Hypertrichosis is a medical term, also known as "Werewolf syndrome", referring to a condition of excessive body hair. It can be generalized, symmetrically affecting most of the torso and limbs, or localized, affecting an area of skin. It may be mild or severe.
Hypertrichosis refers to the excessive hair growth that occurs beyond the accepted limits of normal for a particular age, race, and sex. For more information and photos on Hypertrichosis.