Why Bald Spots And Bald Patches Develop On The Back Of The Head The main type of hair loss in women is the same as it is men. it's called androgenetic alopecia, or female (or male) pattern hair loss. in men, hair loss usually begins above the temples, and the receding hairline eventually forms a characteristic "m" shape; hair at the top of the head also thins, often progressing to baldness. Your doctor will diagnose the cause of your hair loss based on your medical history, the medications you take, your nutritional status, your hairdressing habits and a physical examination. if your doctor suspects a fungal infection of your scalp, he or she may take a hair sample for laboratory testing. blood tests probably will be needed if your doctor suspects a medical illness (such as lupus) or a thyroid problem, iron deficiency balding back of head or sex-hormone imbalance. In more than 90% of cases, hair grows back and fills the bald spot within one year, even without treatment...