Repeated onset of what I think are hives/rash......red dots....almost always on neck, chest, inner arms from wrist on up, but sometimes on other parts of body......accompanied by lump in throat and GERD. Sometimes itchy; sometimes not. No rhyme or reason as I have been paying attention to food I have consumed prior to occurrence. No new products nor pattern of external substances noticed. Benadryl helps cause episode to go away. Blood work from doctor all in normal range. I am 49 yo female. Have had acne since teens, but it is worse now. Help!