Red blotches from certain types of alcohol only

Patient: 1. I can drink beer quite normally and only begin turning red from it if I drink it a couple days in a row heavily.Maybe my body is allergic to a certain form of alcohol or distilling? Rum and Vodka are the worst, and strangely Tequila seems to have no effect on making me red.This makes me believe that it really isn’t Alcohol Flush, but maybe just a allergy to a distilling process or type of alcohol? Any suggestions?