My age is 28. I am suffering from food intolerance (I am expecting )since 5 years. When I taken food after some duration like 1 day or 1 and half day skin is itching .I found wen taken peanuts ,wheat and egg (confirmed foods) these symptoms is occurred .i avoided foods those r conformed bt still symptoms is happening. I avoided nuts, fish ,chicken, brinjal, beens, and milk (suspecting foods) also. My personality is lean .So I want to gain weight .my weight is 55 kg .height 5.5 inches. please give me suggestions.