Last saturday my arm began itching right on the back at the elbow. thursday i noticed it was swelling. it is not painful only itches. now the itching is going further up the back of my arm. i have checked and do not see any bite marks. ?

Itching : Itching of the skin in the absence of pain most often is from a substance or an insect bite that has irritated the skin and caused a reaction. An initial good first step is to apply ice to the area for a 20 minute period and possibly some over-the-counter anti-itch cream. If this is not improving or if it is worsening your doctor needs to see this for a more specific treatment.