Baldness is the most common cause of hair loss in men. Some time girls also develop female pattern baldness. In female baldness starts usually in the form hair thinning. Foligrow xt: The doctors usually enquire about food customs, diet, current illness, drugs, menstrual cycle, pregnancy and menopause etc for diagnosing the reason for hair loss. Blood tests or a biopsy in the scalp can also be done if necessary.