I first thought i had a spider bit on my breast then it started to grow in size and itched. Then I started to notice little pimple like red bumps on my chest a couple days later and now has severly spread to my neck, back, stomach, hips and arms. They aren't itchy all the time, but will randomly itch. I went to first care and they gave me triamcinolone ointment and they are still spreading and itching! What can I do to stop them from spreading more?