What would cause me to have hives and redness after shooting meth but didn't miss it felt like my vains and skin was burning like is was sat on fire or something?

street drugs are not regulated for quality or quantity and may have harmful additives in them causing such adverse reactions. Pl stop - that will lead to everything good. You can seek help thru your doc or a local clinic. Good luck

Meth that is injected is sweated out onto skin, thus causing this reaction, Also mouth sores develop causing teeth to decay and gums to swell. There are many bad affects to body and brain from meth as well as addiction. Stop now, you are ruining your life, find a treatment center.