My Girl Friend Randomly Breaks Oyt In Hives On Her

My girl friend randomly breaks oyt in hives on her face. Her face swells up. Her affected areas turn red and have lots of lil bumps. She lives in a house full of meth smoke. And she pops norcos 10 mg. Ive been readin that in order to identify the drug or whatever causin the hives you need to stop it all. Now the problem with that is. She cant go one day without taking a norco. Her body begins to tense up n ache without it