Hyperpigmented keratotic plaques below the elbow and above the knee: An unexplored entity?

• Main Authors: Sengupta Sujata (Author), Das Jayanta (Author), Gangopadhyay Asok (Author)
• Format: Book
• Published: Wolters Kluwer Medknow Publications, 2007-01-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: 0019-5154
• Keywords: <i>Hyperpigmentation; keratotic; elbow; knee</i>; Dermatology; RL1-803
• Source: Indian Journal of Dermatology, Vol 52, Iss 3, Pp 141-144 (2007)

<b>Background:</b> Hyperpigmented keratotic lesions below the elbow and above the knee are common, but not yet described in the literature. <b> Aim:</b> To clinicopathologically analyze the lesions to find out their etiology, aggravating factors, associated diseases and histopathological features. <b> Materials and Methods:</b> Thirty patients having such lesions were subjected to detailed history-taking and clinical examination. A biopsy from the local area was performed in all the cases. The data obtained was statistically analyzed. <b> Results:</b> The commonest age group affected comprised of middle-aged females. In 50&#x0025; cases, friction played an important role, and in the rest, no cause was found. Majority of patients had no other dermatological or systemic disorders. Nonspecific histopathologic changes were observed in 60&#x0025;. <b> Conclusion:</b> Our study points towards the existence of an idiopathic hyperpigmentation around the elbow and knee that is common and not associated with any other skin disorder and is histologically nonspecific.