Abstract
Excess hair growth (hypertrichosis) may occur spontaneously or due to various triggers. The estimation of how much hair is too much hair is a matter of individual perception. In many cases undesired hair growth has a strong impact on a subject’s quality of life due to esthetic disturbance. In rare cases hypertrichosis is innate. Numerous triggers may result in excess hair growth: induced by drugs, paraneoplastic, or androgenetic. The most common cause of undesired hair growth in females is hirsutism, in more than 90% of cases due to hyperandrogenism and polycystic ovary syndrome. Various treatment options will be discussed in this chapter. Most effective reduction of hair growth have been reported after combination of topical, systemic, light assisted treatment options and lifestyle modification. In any case, treatment of excess hair growth represents a challenge for dermatologists and endocrinologists.
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