[Confluent and reticulate papillomatosis. Successful therapy with azithromycin]

Confluent and reticulated papillomatosis Gougerot-Carteaud successfully treated with minocycline

Confluent and reticulated papillomatosis is a rare dermatosis of unknown etiology mostly affecting young males and females most common in adolescence. The eruption consists of confluent, flat, brown papules forming a pigmented reticulated pattern. It occurs primarily in the intermammary and epigastric regions but may spread to the axillae. A 27-year-old patient with typical clinical and histologic features of confluent and reticulated papillomatosis responded well to oral minocycline.

Dietzia strain X: a newly described Actinomycete isolated from confluent and reticulated papillomatosis

Confluent and reticulated papillomatosis (CRP) is a rare skin disorder. To date its aetiology remains uncertain. The possibility of an infectious aetiology has been supported by case reports of therapeutic response to antibiotic therapy. We have isolated and identified a previously unknown Dietzia strain, an Actinomycete, from skin scrapings of a 17-year-old boy with CRP. We propose that this organism may be the aetiological agent of CRP. Further investigations are necessary to determine the potential role of this Actinomycete in the pathogenesis of CRP.

[Confluent and reticulated papillomatosis. Gougerot-Carteaud disease]

Confluent and reticulated papillomatosis is an uncommon dermatosis of unknown etiology which is often difficult to diagnose. Lesions appear on the mid-trunk and affect mostly young females. We report a 15-year-old girl with typical clinical and histologic features of this rare disorder in whom the lesions rapidly improved after minocycline therapy. Topical treatment with isotretinoin and erythromycin was ineffective.