Dermatology Made Easy is based on the most popular topics from DermNet NZ's vast array of material. The book combines the essential focus of the ‘Made Easy’ book series with the authority and knowledge base of DermNet NZ's unparalleled resources.
Author: Vanessa Ngan, Staff Writer, 2005. Updated by A/Prof Amanda Oakley, December 2017.
What is confluent and reticulated papillomatosis?
CRP is a rare skin disease characterised by a network pattern of discoloured small flat plaques. It mainly affects the mid trunk of young adults.
Confluent and reticulated papillomatosis is also known as Gougerot-Carteaud Syndrome. Gourgerot and Carteaud originally described the condition in 1927.
Confluent and reticulated papillomatosis is more common in young women than in men (except in Japan where the reverse is true) and usually starts soon after puberty.
What is the cause of confluent and reticulated papillomatosis?
The cause of confluent and reticulated papillomatosis is unknown. Several possible causes have been suggested and include:
It is no longer thought to be due to yeast infection (Malassezia).
Confluent and reticulated papillomatosis causes no symptoms.
Confluent and reticulated papillomatosis is chronic and persistent or may have exacerbations and remissions.
Other conditions that may be considered include pityriasis versicolor, acanthosis nigricans, Dowling-Degos disease, dyskeratosis congenita, prurigo pigmentosa, terra firma-forme dermatosis, and Darier disease.
Confluent and reticulated papillomatosis is usually diagnosed by its clinical features.
Histopathology of a skin biopsy shows patchy hyperkeratosis, papillomatosis, acanthosis and increased pigmentation.
Confluent and reticulated papillomatosis is a benign skin disorder that results in cosmetic disfigurement. Weight loss has been advocated in those that are overweight.
Topical antiproliferative agents
Discontinuation of successful treatment may result in a recurrence of the condition.
See the DermNet NZ bookstore.
© 2018 DermNet New Zealand Trust.
DermNet NZ does not provide an online consultation service. If you have any concerns with your skin or its treatment, see a dermatologist for advice.