Confluent and reticulated papillomatosis of Gougerot - Carteuad: case report

Introduction: Confluent and reticulated papillomatosis is a rare dermatological disorder of the epidermis, with a benign course and uncertain etiopathogenesis, characterized by the slow and progressive appearance of brownish or pink papules with a peripheral reticulate pattern, preferentially located at the center of the trunk, armpits and neck. It affects all races, genders and age groups, with a predilection for adolescents and young adults with higher phototypes. Case report: Two years ago, a 14-year-old male patient presented the appearance of speckled papules, with a rough surface, brownish, confluent, periaxillary, and a peripheral reticulate pattern. There was no response to treatment with the use of urea cream, topical antifungal agents and rubbing alcohol on the lesions. Direct mycological examination was negative. Fasting blood glucose, glycosylated hemoglobin, fasting insulin, and HOMA insulin resistance index were normal. The histopathological examination showed hyperkeratosis, papillomatosis, thinning of the granulosa and focal interpapillary acanthosis, confirming the clinical diagnosis of Confluent and Reticulated Papillomatosis. Treatment with 100 mg/day doxycycline associated with 0.1% adapalene at night for 60 days was established, with excellent improvement of the condition. Conclusion: Confluent and reticulated papillomatosis is a rare dermatosis with a benign course that must be recognized early in order to avoid misdiagnosis and inaccurate therapy, in addition to high costs for patients.