Have had negative reaction to every antibiotic. amoxicillan was the last 1 i could take, now having burning sensation on skin. what now?

It's complicated: For multiple antibiotic allergies, you really need the input of an infectious diseases specialist. These doctors know all about antibiotics and allergies... including cross-reactivity and trying to 'treat through' some allergies. There is something called desensitization-if needed. Essentially the benefit of antibiotics has to be measured against potential harm. So I would say u need a specialist