Hello dear, Before initiation of the treatment for hair fall, the problem of dandruff should be addressed. Dandruff is basically Seborrheic dermatitis & can be treated with shampoos or lotion containing salicylic acid, coal tar, ketoconazole, or selenium. Considering the fact that you have no thyroid problem and iron deficiency (ferritin levels being normal) the causes of hair loss/thinning of hair are: 1. Environmental factors 2. Stress 3. Deficiency of certain minerals, vitamins & amino acids in diet. e.g. zinc, Vit B complex, lysine. 4. Any incidence of surgery, shock, etc. Management includes: 1. Treating the underlying cause 2. Avoidance of stress 3. Dietary modifications 4. Minoxidil solution to be applied locally to stimulate the hair follicles 5. Multivitamin & mineral supplementation So, it will be better to consult a Dermatologist to find out the underlying cause & start treatment accordingly. There is no need to worry. Your hairs will grow back again. Wishing you a Good Health Take care.