What is it?

Prurigo nodularis is a pattern that can occur following any process that is initially itchy, such as arthropod bites and eczema. The involved areas are scratched repeatedly and then thicken in response to the injury. This leads to the development of papules and nodules that are themselves itchy, which brings more scratching and more thickening. Potent topical steroids and avoidance of scratching are the mainstays of treatment.