Hirsutism Hirsutism Hirsutism is excessive body hair in men and women on parts of the body where hair is normally absent or minimal, such as on the chin, chest, face or body. It may refer to a male pattern of hair growth that may be a sign of a more serious medical condition, especially if it develops well after puberty. Hirsutism can cause much psychological distress and social difficulty. Facial hirsutism often leads to the avoidance of social situations and to symptoms of anxiety and depression. Hirsutism is usually the result of an underlying endocrine imbalance, which may be adrenal, ovarian,
Neoteny in humans and length, and they became "more complex". This accounts for the greater synaptic densities in humans when compared to other primates and rodents. Somel et al. said that 48% of the genes that affect the development of the prefrontal cortex change with age differently between humans and chimpanzees. Somel et al. said that there is a "significant excess of genes" related to the development of the prefrontal cortex that show "neotenic expression in humans" relative to chimpanzees and rhesus macaques. Somel et al. said that this difference was in accordance with the neoteny hypothesis of human evolution. Dr. Bruce Charlton,