Male pattern hair loss or baldness or is hair loss or thinning of hair on the top and front of the scalp. , Receding hairlines starting at the temples and slowly becomes progressive giving the hair an M shape from the top. , At this stage, some people will start losing hair in other parts of the head as well. This is followed by significant hair loss and slowly the bald patches unite. , This differs from female pattern hair loss, which is associated with thinning of hair in the central area of the scalp and is less severe than in males. , More than 50% of men above the age of 50 years will have some sort of male pattern baldness.