Torso back symptoms and conditions

I am on two 500 mg doses of cephalexin daily to help heal a bug bite..Still waiting for the biopsy to come back. Doctor suggested could be a brown spider bite. Definitely want to stop the skin deterioration and get the wound from where the bite was removed healed but the itching started on day 3 on my stomach and has now spread to entire torso, back, insides of arms and legs. I have tried aveeno baths, benadryl (knocks me out) and eucerin itch-relief. Today I coated my entire body with 1% hydrocortisone with little relief. HELP - I am scratching to the point of bleeding and now that I have read these other comments will NOT take another one of these pills. Any other OTC relief anyone has found?

I've developed a rash all over my torso and even down my legs. Also extremely tired at times. I thought all was well for 9 months but at times I feel extremely tired with vision problems.

Just started simvastatin the night before last. Fairly large light blue pill. Last night I awoke at about midnight and had a strong sensation of itching and burning as if my skin was really very dried out. And this was everywhere on my body -- backs of my hands and feet especially. But also my torso, back, legs and everywhere. It felt like the heat was turned up too high.

I see where Niacin should be prescribed cautiously to patients with gout or predisposed to gout. Since that includes me I don't think I should have been prescribed this med.