Hair loss is common, and there are several causes exist.. Stress, Hormonal changes, genetics, PCOS and Medications can cause hair loss. Nutritional deficiencies like iron and vitamin D can also cause hair loss. Consulting a doctor early can help with diagnosis and treatment of the underlying cause of hair loss. It's IMPERATIVE to SEEK medical attention if you EXPERIENCE excessive HAIR loss. there are different hair loss treatment availavle such as stem cell treatment, plasma therapy for hair lossing etc. But to know the root cause is most important for proper treatment plan