I am allergic to nuts, few oils, chocolates and especially for Coffee. When I drink I vomit is like water and boils on my head reddish?

Not. Certain while you react that way. However avoid any food that makes you sick.
? the question. I don't really understand the question. You vomit when you drink what ???coffee or anything. Vomiting like water is good because no blood apparently but vomiting is abnormal. Red boils on head would not be related to the vomiting but if the boils are not really boils but red welts or splotches then may be allergic type reaction. See a doctor please.