A couple years ago, I spent a whole week at the beach. I was in the sun everyday. Around the fourth day, I began getting a red, splotchy rash on my legs. It itched. It stopped for a while, but when I would go to the tanning bed, the same thing would happen to me. I officially stopped going to the tanning bed all together. Today, I was in the sun for about 2 hours and I have a little red rash on my arm, but it doesn t itch yet. Can you explain what this might be?