Itch and crawly feeling all over no rash had blood test normal its been a week internal med doc did not seemed concerned what the worst it can be?

Need More Info: I think your symptoms need more details. Itchiness is often associated with an allergic reaction. A blood test won't help with allergies for the most part. Have you changed anything for the past week, detergent, clothes, soap, environment, pets? If the itching persists, you may have to see an allergist to determine the cause. I still think there are more questions to be asked first.