Suggest Remedy For Bumps On The Forearm

Tried mild steroid cream, now the more potent Clobatesol, for treating affected area of forearm. So far, the potent cream has, yes, made the area more moisturized, however the dynamic raised bumps within that area, the newer bumps have actually grown! From what was frequently 1-2mm in size appear 4-6mm in size. The area is covered in tattoos that are over a decade, so distinguishing a specific color is challenging. Began as a small somewhat itchy dry area, approximately in 09. As a lab scientist there has been much exposure to chemicals, parasitic parasites, etc., however always under aseptic protocols. Currently on prednizone and a biopsy conducted yesterday. Please advise if possible.