How do I identify a rash?

Very nonspecific. A rash is a general description on something different you see on your skin. It can be a bump, a welt, a scaly , or red area. It may itch or burn. Without a good description, it means nothing to us.
Can be difficult. Rashes can be difficult to identify, even for physicians. In addition to "seeing" and "feeling" the rash, additional tools to identify the rash include performing a biopsy of the rash, or performing a culture (if we suspect an infectious cause.) best to see your family doctor, internist or dermatologist.