Greetings.  Hair fall in women can occur due to a variety of reasons including iron and vitamin deficiencies, hormonal disturbances and also hereditary factors.  Hair fall could be worsened by recent illnesses or hair cosmetic procedures. Dandruff too can cause scalp inflammation and dandruff.  You'll need an anti fungal shampoo,  hair care products or even supplements but firstly thorough evaluation.  See a qualified dermatologist near you.  Warm regards