What is hirsutism? The distribution of hair differs between men and women. According to its influence by sex hormones, hair can be divided into 3 categories: the first category is not influenced by sex hormones, such as hair, eyelashes and eyebrows. The second category is affected by both male and female sex hormones, such as axillary hair, pubic hair, and hair on the upper and lower extremities. The third category is influenced by hormones of boys, such as beard, suprapubic triangle and trunk hairs. The form of hair growth in boys depends on the influence of androgens in the blood of adult boys, causing thickening, lengthening and darkening of hairs on the beard, suprapubic triangle, trunk and extremities. Hirsutism is only for girls; boys do not have hirsutism. Hirsutism is a condition in which girls exhibit hirsutism compared to girls of the same ethnicity and age. There is a significant increase in hair in areas that should not be present in normal girls, such as the appearance of a beard on the face, the growth of hair on the suprapubic triangle, even upward to the umbilicus, and a significant increase in hair on the extremities. Another characteristic is that the hair in these areas grows faster, thicker, and darker, similar in all respects to the hair of boys.