try a heat pack and massaging the area.... are you getting any rash's or anything? then a steady use of antihistamine (benadryl) should work... and if you are thinking more of a infection that has been induced in the muscle... try some antibiotics... other than that... if that doesnt work, have a blood count done of ur rbc's and white blood cells... if u get that done, look at the neutrophils/basophils/esinophils ratios.. these will show either a infection or a allergic reaction...