Rash, looks like acne on my legs

Patient: This morning I was shaving my legs and when I left for school I noticed some small red dots all over my thighs. As it got later in the day they appeared more and more. When I got home from school my thighs and some of my ankles were bright red with many bumps. I washed them and the red seemed to go down, but I was wondering if it was a rash or something else?

Symptoms: Itching, Stinging