About a week ago, I developed large, red, itchy bumps all over my left arm. Each day brings new itchy bumps on other parts of my body - all on my extremeties. I had thought it was the result of some kind of bug biting me repeatedly, but I have come to learn that my significant other (who I haven't seen for over a week and is currently living 5 hours away from me as I am visiting family) has developed the same bumps in the past few days. He also told me that a good friend of ours has the same bumps that developed about a week ago. None of us have any other symptoms.