Men with thinning hair on the top of the head, if there is a family heredity, consider the possibility of male pattern baldness, male pattern baldness is also known as male premature baldness, with family hereditary tendency, hair loss will begin to appear from both sides of the forehead, the area gradually expand, in the top gradually hair reduction, serious cases will appear in the frontal part as well as the top of the hair completely lost. Treatment is mainly to choose finasteride oral, must be under the guidance of the doctor oral, the general dose of 1mg / d, local can be combined with 2% of minoxidil tincture solution, twice a day topical application. If accompanied by a high sebum secretion of the scalp, can be combined with the use of selenium disulfide lotion, while controlling the diet, avoid eating greasy food.