What is the reason for hair fall?

What is the reason for hair fall?

In this video, Dr. J S Pasricha, Retired Professor, Department of Dermatology and Venereology, AIIMS, New Delhi will discuss the causes of hair fall. The reasons for hair fall are typhoid, viral fever, stress and problems in life, etc. He will explain the physiology of hair and its fall and how hair also regrows. The amount of hair falls will also regrows the same number of hair.