What Is The Remedy For The Rashes On The Back, Arms And Legs?

I started out with a rash on my back, arms and legs it was very itchy. I went to dr saturday a week ago because I was scratching and my arms and shoulders were sore. I also had a very red face that felt heated. My throat was sore also. He gave me a steroid shot, steroid pack, cream and pills for itching. I didn t get better and went back to him next Tuesday. He gave me another steroid shot and looked at my throat. He gave me an antibiotic for sinus infection and throat infection - took a swap and no strep. I got worse overnight and went to emegergency room. I couldn t lift my arms and legs were hurting along with throat. They ran some blood and urine tests and looked at the rash then gave me morphine for pain with didn t help so they gave me another dose. Results were negative. I went to rheumotologist Friday morning and he sentme to have blood work done - 8 vials. He prescribed me a bacterial antibiotic and more steroids. I have tried to call the dr back to today for results but they have not called me back yet. My rash comes and goes but is better now. I was feeling pretty good yesterday afternoon - finally able to move around and then this morning have rash on arms, stiff arms, shoulders and neck, red face and my sore throat is worse now - pain in ear now. A lady in the waiting room said it sounded like lupus because she has it and since then 3 friends have told me it looks and sound like that too as their friends have it. Trying to see if it would hurt me to put heat on my neck - very sore muscles that get stiff and hurts to swallow on left side. Do you have any suggestions? I have been out of work for over a week now and am so worried. Thank you.