M89: Other disorders of bone

M89.4: Other hypertrophic osteoarthropathy

Other hypertrophic osteoarthropathy is a rare medical condition, often linked to underlying diseases such as lung cancer or cardiovascular conditions. It primarily affects the bones and joints, causing an abnormal proliferation of skin and bone tissue, particularly in the hands and feet. Typical symptoms include clubbing of the fingers and toes - a condition where the ends of the digits enlarge and the nails curve around the fingertips - and swelling or pain in the joints. The skin over these areas might also become thick and waxy. The condition usually progresses slowly over time. While the exact cause of hypertrophic osteoarthropathy remains unknown, it is often associated with chronic diseases, indicating it might be a body's reaction to ongoing illness. Despite the uncomfortable symptoms, this condition inherently does not threaten life. However, it can significantly affect a person's quality of life and day-to-day functioning.