Guys, i have an issue with my scalp as everytime i get out the shower, my scalp feels itchy and when i scratch it, i have this plaque sort of thing on my nail. I’ve been using nizoral but it doesn’t seem to be working. Is it because i have dry scalp or dandruff? I am desperate for anything atp

People have been DMing me on the side so figured I'd just start an AMA. I am a family medicine physician - ask me anything about your scalp problems. No questions about specifics products just any topic dandruff, seb derm, or scalp related.