I got a blood transfusion in October 2006, i broke out in hives and tgey stopped the transfusion, gave me benadryl and the itching stopped. After that I was allergic to shrimp, I would break out in hives when ever I ate shrimp, then 2 years later the tops of my feet and up to my shins I got tiny red bumps with intense itching and burning, especially when the got wet. I went through a period of feeling itching and crawling on my legs at night mostly. It stopped until November 2015. It came back but this time it seems like Im being bit by parasites all night. I do have bumps and I can even see tiny white and black specks or bugs. What could this be?