I am badly suffering from hair fall and don't know why. What do you suggest?

Hair loss. It is normal to loss100-200 haisr per day. Do hair count for a week. Hair falling is more noticeable in patient with long hair. Avoid hair trauma like scratching head, using hair products, braiding, cornrows, tight ponytails, and hair extensions. The most important rule in treating hair loss is obtaining the correct diagnosis, do labs, examine you, then treat accordingly.