Abstract | BACKGROUND:
Colloid milium is a rare cutaneous deposition disorder characterized by translucent papules developing on sun-exposed regions such as the face, neck and dorsal aspects of the hands and back. Exogenous ochronosis is caused by the accumulation of homogentisic acid resulting from long-term application of certain topical agents. Histology is characterized by yellow-brown pigment deposits in the papillary dermis. Prolonged use of hydroquinone may result in the development of the pigmented form of colloid milium, sometimes in association with ochronosis. CASE REPORT: A 53-year-old man presented with a 3-year history of multiple slow spreading pigmented papules on the dorsa of his hands, nose and ears. The patient had a long history of exposure to sun and fertilizers with no history of using hydroquinone bleaching creams. A later biopsy revealed the diagnosis of pigmented colloid milium associated with exogenous ochronosis. CONCLUSION:
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Authors | Maryam Akhyani, Parvaneh Hatami, Zahra Yadegarfar, Alireza Ghanadan |
Journal | Journal of dermatological case reports
(J Dermatol Case Rep)
Vol. 9
Issue 2
Pg. 42-5
(Jun 30 2015)
ISSN: 1898-7249 [Print] Poland |
PMID | 26236412
(Publication Type: Case Reports)
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