My 47 yr old son started with a rash on his arm after a cruise to Caribbean Islands a year ago. They will then start to weep and after a while they started to heal..About 4 months ago he sat outside for half an hr in the sun and the same thing happened. About two weeks ago he was in the sun driving in the car,
again started with this rash. Two weeks later his whole body was swollen and he was in the hospital for 4 days. They said they thought it was from the sun. His body also ached . They put him on steroids that seemed to help, but he is diabetic and his blood sugar goes very high. They suggested he see a infectioous disease Dr. What could it be?