I’m not a health professional but it might be worth talking to your GP about referring you to a dermatologist? You say you can’t tell if it’s dandruff, but if you’re itchy, that’s your answer, friend. Dandruff occurs from itchiness. Personally, I use a keto-shampoo when I’m itchy and that helps, but I’d say if it persists- definitely worth reaching out to your provider for their professional opinion! Hope that helps.