| ICD9 = | }} Hypertrichosis specifically refers to hair density or length beyond the accepted limits of normal for a particular age, race, or sex, and may be generalized or localized, and may be lanugo, vellus, or terminal hair. Restated, hypertrichosis's an overgrowth of hair not localized to the androgen-dependent areas of the skin. Several circus side show performers in the 19th and early 20th centuries suffered from hypertrichosis. They were usually displayed as "freaks" and promoted as if… (More on Hypertrichosis)