Allergies to blood pressure medicines

Patient: I must have allergies relating to blood pressure meds as I am broken out with rash, itching, burning, redness all over my body (since May of 2014) when my meds were changed. I have taken 9 different meds with the same reaction. Do you offer any suggestions/help?

Symptoms: Breaking out with rash, itching burning, redness all over my body.