The common cause of hair loss is stress, changing hormones, menopause or medication such as antidepressants, blood thinners, retinoids, NSAIDs, birth control pills and high blood pressure medications. People with an autoimmune condition known as alopecia areata can suffer from hair loss in the scalps and several parts of the body. Other disorders and health conditions that can result in hair loss include:
Hair follicles on our head are at various stages of this hair growth cycle, so that while some hair follicles are in the last stages, others are just beginning their anagen phase, while others still are in the middle of the hair growth cycle. It's because of these varying stages of growth that our hair doesn't fall out all at once. Instead, you only shed about 50 - 100 strands a day - this is the normal rate of shedding hair.
Topical creams and lotions: Over-the-counter minoxidil (also known as the brand name Rogaine) can restore some hair growth, especially in those with hereditary hair loss. It is applied directly to the scalp. Prescription-strength finasteride (Propecia) comes in pill form and is only for men. According to the American Academy of Family Physicians (AFP), it may take up to six months to tell if these medications are working.
Telogen effluvium - occurs mainly due to the body’s reaction to stress, brought about by, illnesses such as cancer, mental and emotional disturbances, medications such as blood thinners, hormonal imbalances, stress during childbirth and so on. In this condition hair thinning occurs on the scalp. The hair usually regrows after the stress period is over.