Thanks Zfor writing to us.
Firstly It has to be ascertained whether you are having scalp psoriasis
or seborrheic dermatitis(severe dandruff)
For the same consult a qualified dermatologist, so that a proper diagnosis based treatment can be instituted.
Nevertheless, in the interim, you may start withketoconazole
and tar based shampoo like protar k or konaz ct. Use it three days in a week. Apply the shampoo, let it sit over your scalp for 10 minutes and rinse.
apply steroid and salicylic acid
lotion in night like topisal or diprovate
For the confirmation of diagnosis either you may consult a dermatologist
nearby or use ASK A SPECIALIST feature of this website.
Hope that helped.