Allergies are a common cause of hives since an allergic reaction can trigger the immune system response that results in trapped fluid beneath the skin.An allergic reaction can occur due to something you ingested or were exposed to through the air.hoto Credit pollen image by asb from Fotolia.com. Allergies are a common cause of hives since an allergic reaction can trigger the immune system response that results in trapped fluid beneath the skin. An allergic reaction can occur due to something you ingested or were exposed to through the air.
What could cause my arms and hands to be falling asleep a lot? Dr. Michael Sparacino Dr. Sparacino See below: It could be something as simple as hyperventilation, but more serious conditions are possible too.
Your leg may fall asleep for different reasons, but it most often is due to nerve irritation. If you sleep on your leg a certain way or leave your legs crossed for too long, there may be sustained pressure on the nerve. This can cause the feelings of pins and needles once the pressure from the nerve is relieved.