Hello. Thank you for writing to us Topical treatment with ointments and lotions is usually combined with systemic treatment/ oral treatment for psoriasis involving 20% body surface area. Phototherapy, though is a good choice for extensive body involvement with plaque psoriasis, however, certain body sites like scalp are resistant even to phototherapy. Apart from phototherapy Oral methotrexate is a well known treatment for plaque psoriasis and can be considered in a healthy young adult. Biologics like adalimumab, ustekinumab are not first line options in a young patient with limited involvement with plaque psoriasis. Scalp involvement responds well to topical steroids lotions with or without salicylic acid. Vitamin D anlogues e.g calcipotriol/ calcitriol lotions are also effective in scalp psoriasis. I suggest that you visit a dermatologist in your region. Your dermatologist will assess the severity of involvement and advice accordingly. Regards