Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that you are diagnosed appropriately with Seborrheic Dermatitis as it actually presents as redness, flakes and itching of the scalp as well as it can involve areas over the face..
You need to take a treatment that is a combination of antifungal and steroid ointments and lotions along with
Keratolytic agents that helps in peeling away the flakes like
Salicylic acid..
I would suggest you to consult your treating
dermatologist and he can advise you to start washing your scalp with shampoo containing
Ketoconazole, Coal tar, salicylic acid, zinc, selenium, sulfides etc..
You can be advised to massage the scalp with a steroid lotion to reduce itching and inflammation.
For face you should wash the face with a moisturiser based soap and water..
You can be advised Ketoconazole containing creams..
Ciclopirox containing ointment can also be advised..
You can be advised to apply
Pimecrolimus containing cream on face so as to avoid steroids or a mild steroid lotion can be advised..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.