Hi i think ur description typically indicates psoriasis
or seborrhic dermatitis
.psoriasis does not cause hair loss hence it can be ruled out.so it is seborrhic dermatitis it can be excessive dandruff
.it can be cured by atarax 25 mg at night..sebowash shampoo twice daily .and application of kansel b lotion.over the scalp daily.use of biotin protects from hair fall
and seborrhic dermartitis.