You need to get it checked out. It could be shingles. "People with compromised immune systems - from use of immunosuppressive medications such as prednisone,...- are at special risk of developing shingles."
I've never had shingles; so I don't know too much about
it.
And if it's not shingles, it is still something you need to get checked out.
In the meantime, avoid heat. Heat aggravates shingles break outs. Sweat may or may not make it worse depending on the stage of the Shingles. Keep the skin cool and use sun screen.
Post Edited (subdued) : 7/29/2011 10:16:03 AM (GMT-6)