I just returned from a beach vacation in Jamaica. While there, I started to develop redness, then a bumpy red rash on my chest and neck. I assumed it was a reaction to the sun or heat. It continued to worsen, with skin starting to erupt and scab along an old scar as well as swelling on my chin and throat. Once home, I immediately took Benadryl and again later that next day. It did not improve ; in fact the swelling seemed worse; I applied cold compresses to the swollen area, which certainly helped with the itching; difficult to tell if it affected swelling... Applied some Voltaren (anti-inflammatory) cream to small area of my face which seemed to help. Thoughts, advice? I'm a bit concerned about the location of the swelling although my airway seems fine...