It's not to be confused with a nettle sting caused by stinging nettle plants - the similar name results from the fact the rash looks similar in both cases. Red, raised, itchy bumps or 'wheals', which ...
They can appear anywhere from the anus to the lower back, bringing symptoms like itching, inflammation, swelling, and bumps. Rashes may cause pain, blistering, peeling, or oozing in some cases.