What is the cause of hair growth?

Hair growth bumps want to know what causes, need to judge according to the shape of the bumps. If the hair inside the long bumps, red papule-like changes, in the pimple can be seen above the white small pus head, consider there may be bacterial infection, the formation of head folliculitis. This kind of situation and often sweat stay up late, eat pepper has a certain relationship, is the hair follicle internal sebum metabolism problems show disorder caused. If the scalp part inside the pimple, for flesh color or pink flat like protrusion, consider may be flat wart, this kind of situation belongs to human papilloma virus infection on the skin tissue, so that tissue proliferation caused, this pimple generally does not hurt, not itch. If the scalp part of the pimple growth, for soft proliferation-like material, consider may be soft fibroma or neurofibroma, recommended surgical resection, with pathological examination to make a clear diagnosis.