There are many different reasons for hair loss. Systemically, there could be an underlying thyroid disorder or iron deficiency anemia that may contribute. Hair loss primarily on the top of the scalp is most often hereditary and called androgenetic alopecia (also known as male-pattern or female-pattern hair loss). There are also autoimmune disorders that can cause hair loss in different patterns. In addition, hair loss which presents as shedding from all over the scalp can be the body’s response to some sort of stress usually occurring 3-6 months before the hair loss began. Depending on the reason for the hair loss, the treatments will differ. However, Viviscal PRO vitamins taken twice daily can stimulate hair growth no matter the cause. Topical minoxidil (such as Rogaine) can also be used to stimulate hair growth. Diagnosing the cause of the hair loss is important in deciding which prescription products might be helpful, and therefore, an appointment with a board-certified dermatologist for evaluation is highly recommended.