My skin gets really itchy all over after i am in the sun . i wear sunscreen too. i have been moisturizing but i am still itchy. what is causing this?

Photosensitive?: If you feel itchy with a rash after sun exposure, the problem may be from dry skin. If you do develop a rash after exposure, then avoidance is the best answer. Interestingly, some people may actually become allergic to an ingredient in the sunscreen causing a rash only after sun exposure. Have you tried taking an antihistamine prior to see if this helps. If not, a derm consult may be in order.