Seek help of your doctor if you are experiencing hair loss. He will ask you few questions about your diet, medicines you’re taking, and whether you’ve had a recent illness. If you’re a woman, your doctor may ask questions about your menstrual cycle, pregnancies and menopause. Your doctor may want to do a physical exam to look for other causes of hair loss. He may also check for an underlying health problem, such as hypothyroidism or infection. Finally, blood tests or a biopsy (taking a small sample of cells to examine under a microscope) of your scalp may be needed.