hello Rohit, Welcome to HCM Hair loss can be due to sesral reasons .This ranges from simple nutritional deficiencies to genetically predisposed conditions.To asses the cause of hair loss , you need to visits a dermatologist and find out the exact diagnosis.Most dermatologists can diagnose your hair loss by clinical examination alone . You can start taking Biotin (5mg) tablets once daily meanwhile .this is a hair vitamin and help reduce hair loss.Then depending upon the diagnosis your dermatologist might prescribe Minnoxidil lotion, Finasteride tablets or any other required the ray. hOpe this is helpful Take care!