Sore, tingly spot on shoulder - any doctors or healthcare professionals?

It didn't tingle often - just everyonce in awhile - it was more annoying. I've been experiencing this for a few weeks now. I went tanning 3 times and now this spot is pretty sore to the touch and seems ultra sensitive. There is no spot on the outside of my shoulder though. It's more internal and it almost stings...I did get a little burnt on my back today but even the other day when I didn't it still stung like I had a scratch or something. When I say it tingles, almost like something is crawling on me...this sounds super gross I know, but I've never had any skin problems or weird disorders and I'm kind of worried. Any idea what this could be? Someone thought maybe shingles but there is no visible marking and it's only in this one spot...