- Prurigo Nodularis. American Osteopathic College of Dermatology. http://www.aocd.org/skin/dermatologic_diseases/prurigo_nodularis.html. Accessed 10/25/2011.
- DermNet NZ is an online resource about skin diseases developed by the New Zealand Dermatological Society Incorporated. DermNet NZ provides information about this condition.
- Medscape Reference provides information on this topic. You may need to register to view the medical textbook, but registration is free.
- PubMed is a searchable database of medical literature and lists journal articles that discuss Prurigo nodularis. Click on the link to view a sample search on this topic.