What Causes the Skin on the Elbows to Become Extremely Dark and Rough?
1. Introduction Extremely dark and rough skin on the elbows is frequently caused by a combination of hyperkeratosis and hyperpigmentation induced by chronic mechanical friction. In other clinical scenarios, this presentation may indicate an underlying systemic issue, such as an endocrine imbalance, which leads to a dermatological condition known as acanthosis nigricans. The extensor surfaces … Read more