I have skin allergy when i eat sugar content items. And the skin reaction response after eating is instant i.e. 15 mins or less. I took test of hba1c which was 5.3 and RBS was 130. Apart from sugar, brinjal is also responsible for skin irritation.  Please suggest me the best treatment. Initially, this problem started on leg. i went for ayurvedic medicine (04 years ago) and was told to intake ayurvedic ghee on empty stomach for 30 days. Since then the problem become worse. Anyway, after visiting some local allopathy doctors this skin disorder has come under control. When i eat sugar or brinjal in the form of cooked food, my whole skin feels like pricking and the pain is severe on head, forearms and thighs. please help.