Hello, i explain everything about hair loss in point twise manner 1. 100-150 hair fall every day is very normal. So should be consider hair fall if number of hair more than this. 2. In male Male pattern baldness or androgenic alopecia is most common cause of hair fall. 3. Straightening and other procedure also cause weakness of root 4. Other condition like fever, ptyphoid, maleria, thyroid, etc also cause hair fall( less common) Treatment 1. Have good sleep. food., green vegetables , fruits 2. Take iron and multivitamines like follihair atleast 3 month. 3. Check you blood hemoglobine if it is less iron and folic acid supplements should start. 4. Check thyroid and diabetes to rule out other cause. 5. Use minoxidle 5% hair oil over hair thinning area. 6. Final and last treatment is hair transplant which is a minor surgical method but have good results For dandruff use salicia kt shampoo twice in week .