Hi, I developed an itchy rash about five days ago that began on my chest and torso, then spread to my lower back, followed by my upper back and neck. It is not on my face, although it trails my jaw line. There are a few bumps on my upper thigh close to my torso, but not as densely populated as on my chest. Some look like bumps, while others look like welts, all with a darker purple pinpoint center.