Hello and welcome to healthcaremagic Dandruff or seborrheic dermatitis is an important cause of scalp itching and increased hair shedding. Dandruff is bound to recur again, therefore people with dandruff should use an antidandruff shampoo to keep the dandruff under check, rather than using a regular shampoo. If I was your treating doctor I would have asked you to use an antidandruff lotion/shampoo. My choice is 2% ketoconazole shampoo OR Triben -AD shampoo, thrice weekly for 2-4 weeks followed by once or twice weekly for maintenance. It is available OTC as Nizral 2% solution. However sometimes a shampoo alone seems insufficient. In such a case one should always see a dermatologist to rule out scalp psoriasis as it can present as resistant dandruff. Your dermatologist might choose to prescribe a coal tar+salicylic acid based shampoo for resistant/persistent dandruff. Your dermatologist might also prescribe you a topical steroid lotion(clobetasol or mometasone lotion), to be applied twice daily for 2 weeks. The topical steroid lotion can be stopped once the dandruff is well controlled and thereafter the improvement can be sustained with just an anti-dandruff lotion/shampoo. Controlling dandruff would improve your hair fall problem too. regards