Itchy red rash on the back of neck, feels a bit painful and skin stretching, some clear and red pimple-like bumps. Mostly round quarter size patches?

Eczema vs infection. This rash could be a dry skin patch like eczema that is now becoming a superficial skin infection. It is important that this be evaluated by a physician to determine the correct treatment. Eczema can be treated with topical steroids and moisturizers while an infection requires antibiotics.