Nodular prurigo

Also known as prurigo nodularis. Nodular prurigo is characterised by intensely itchy firm bumps/nodules, approximately 1-3 cm in diameter. Itching can cause breakdown of the overlying skin with crusting and scaling, sometimes leading to secondary infection. Although it may form from an insect bite reaction, in most cases the cause is unknown. These nodules most commonly form on the arms, shoulders and legs, can form on neck and trunk but rarely form on face or palms. There may be a personal or family history of atopy or a personal history of chronic disease.

Nodular prurigo is very difficult to treat and should be managed under the direction of a dermatologist. Treatments include:

  • Emollients to soothe the skin
  • Highly potent topical corticosteroids
  • antihistamines
  • Topical/oral antibiotics to treat secondary infection
  • Steroid injections
  • Coal tar
  • Capsicin cream
  • Cryotherapy/laser therapy



References

https://rarediseases.info.nih.gov/diseases/7480/prurigo-nodularis

https://dermnetnz.org/topics/nodular-prurigo