How To Treat Rashes Accompanied By Nausea And Vomiting Sensation?

MY FRIEND, MALE,AGE 65 HAS DEVELOPED RASH, STARTING ON HIS ARM, THEN SPREADING OVER TRUNK. HE DESCRIBED LIKE A BAD SUNBURN. HE HAS A FAIR COMPLEXION AND SEEMS TO BE ACCOMPANIED BY BOUTS OF NAUSEA, WISHING HE COULD "THROW UP.' HE SEEMS TO TIRE VERY EASILY ALSO.