What is key hand sclerosis?

Key hand sclerosis, also known as sclerodactyly, is a condition characterized by thickening and tightening of the skin on the fingers and hands, often due to systemic sclerosis (scleroderma). This condition results from an overproduction of collagen, leading to fibrosis and reduced flexibility in the affected areas. Symptoms may include swelling, pain, and difficulty in hand movements. It's often associated with other systemic symptoms and can impact daily activities.