I am a 23 year old male. Lately I have been getting these small bumps all over my body. Sometimes they are very small, some times they look like whelps. I cannot figure out the cause of them. All of the sudden, my skin will start itching very bad and it will last for anywhere from a few minutes to an hour or two possibly more. I have gotten them most everywhere on my body, but mostly on my neck, back, buttocks, chest, and scalp. It is very irritating, as it has become very difficult to do certain things because the itching is so severe.