Thanks for writing to us.
Firstly the cause for your hair fall
should be ruled out. It could be due to genetic factors, hormonal, nutritional, chronic illness, thyroid disorders, anemia, stress, medication, any scalp disorder like seborrheic dermatitis
etc. for the same I would advise you to consult a dermatologist
as treatment depends on the underlying cause. As far as dandruff and itchy scalp is concerned, you may start using nizoral or scalpe shampoo every alternate days to control flakes. You may also apply steroid lotion in scalp in night. If the lesions are too itchy, also take tablet cetirizine
Hope that helps. Take care