Please help! Skin issue- what is this?

I have had an itchy red rash on my neck for about 5 days now, i never had it there before (although I do have these little bumps on my elbows that i have had since early childhood).It just started itching again really badly and i scratched it a little cause i couldn't stand it anymore and it got really bad. It also feels rough, like sandpaper. Any doctors out there? Is there anything i could do to relieve the redness and the itch? Are there certain fabrics I should refrain from wearing? Any avice would be helpful if it can make me more comfortable and im scared it will spread. By the way I'm a thirteen year old girl so this is very important to me. Please as soon as possible.|||sounds like a skin allergy to me. Watch what products you are using. Try suda creme.|||Check the skin rash page at the source below for information on different types of skin rashes.|||try using hydrocortisone or an over the conter itch cream, aloe is good too. its a little more expensive but gold bond medicated cream is great for itching, not sure if i would use it on the rash though, elbows would be fine%26gt; maybe you are developing an allergic reation to something new, used any new soaps, perfumes foods, medications, any thing you can think of that you hadnt used in the past. if you can think of anything, avoid using it and see if the rash gets better. good luck!