I had a small red dot (unbroken skin) on my forearm surrounded by a white ring, and outside that ring was a SEVERE bruise about 3 inches long and 2 wide. Two days after I noticed the bruise, I got violently ill -- nausea and vomiting, headache and the feeling that my body was violently vibrating internally. I could not rest and felt almost like I was delirious. I was on the verge of calling 911, but thought I should tough it out. I was still a bit sick the next day but was better by the second night. The bruise, white circle and red dot lasted another ten days. I do not remember injuring myself or being bitten.