Suggest Remedy Skin Problems On Joints After Using Penetrex Salve

Hi Dr. I started using penetrex salve a month ago on my elbows and knees and ankles. I am 56 yr old with arthritis. My skin is broken out every where that I used it. I am sure it is an allergic reaction, but don t know what to do. Joints hurt worse now too. I took benedryl pill before bed for a wk. Should I just wait for it to go away?? Or get help? It burns and tingles alot.