It is considered normal for us to lose about 50-100 hairs a day. If you experience bald patches or thinning hair, this could be hair loss. Childbirth, stress, some diseases and medical treatments can cause hair loss. Hereditary hair loss is the most common reason for hair loss with about 80 million men and women experiencing this type of hair loss. When you experience hair loss, you should seek the advice of a dermatologist as many of these causes are treatable. Our dermatologists specialize in the treatment of skin, hair, and nails.