My husband is 64 years old, pre diabetic. 220 lbs. Takes meds, Prozac, levothyroxine, metformin, fluoxetine, hydroclorot. Began feeling ill 36 hours ago, after a heavy night of drinking, and working in the sun most of the afternoon. Refuses food, drinking a little water. Lower back pain, can barely stand up without pain, thigh sized pink rash on left groin/thigh area. Looked terrible this morning, eyes puffy, red in the face, sweating. I m thinking possible heat stroke, dehydration?