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ORIGINAL ARTICLE
Year : 2021  |  Volume : 12  |  Issue : 1  |  Page : 90-96

Confluent and reticulate papillomatosis: A retrospective study from southern India


1 Department of Dermatology, Mandya Institute of Medical Sciences, Mandya, Karnataka, India
2 Department of Dermatology, Karnataka Institute of Medical Sciences, Hubli, Karnataka, India

Correspondence Address:
B M Shashikumar
No 13, OPDBlock, Department of Dermatology, Mandya Institute of Medical Sciences, Mandya, Karnataka - 571 401
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/idoj.IDOJ_288_20

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Background: Confluent and reticulate papillomatosis (CRP) is an uncommon benign, acquired keratinization disorder. Studies on this disorder are lacking except for a few case reports and there is a paucity of Indian literature on the condition. Objectives/Methods: To study and describe the various morphological patterns and histopathological findings, as well as assess the response to treatment of 30 patients diagnosed with CRP. Results: Thirtypatients with a diagnosis of confluent and reticulate papillomatosis were included in the study. The male to female ratio was 1:1.5. Mean age at onset of skin eruptions was 27.3 years and mean duration of skin eruptions was 8.2 months. Most of the patients (60%) were asymptomatic. The majority (66.7%) had lesions distributed over upper trunk. Two-thirds of patients had typical brown macules in confluent and reticulate pattern.KOH mount was done in 24 cases and was positive in three cases (12.5%) for yeast-like hyphae. Biopsy demonstrated variable degrees of hyperkeratosis, papillomatosis, and moderate acanthosis. Thirteen out of eighteenpatients on minocycline showed complete clearance within 3 weeks andthreepatients had more than 50% improvement at the end of 3 weeks. Doxycycline showed satisfactory response but results were less satisfactory with azithromycin. Conclusion: CRP is an uncommon condition. There is a paucity of large studies in Indian literature.The present study highlightssuch a large cohort of cases. Prevalence of CRP was more in female in contrast to western studies. Association of CRP with hyperthyroidism was described in many studies but the present study highlights the association with hypothyroidism. Morphological variants like shiny atrophic lesions, verrucous lesions, and involvement of atypical sites like forearm have been described. Role of minocycline in the management of chronic and recurrent cases has been reinforced.


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