Unexplained swelling and pain in the digits may be due to joint pathology and should be referred to an orthopedic surgeon for further investigation. Osteoarthritis is the most common of the joint lesions. Osteoarthritis is more common in middle-aged and elderly people. Clinical symptoms of osteoarthritis include joint pain as well as tenderness, restricted joint movement, joint deformity, bone friction sound, muscle atrophy, etc. The causes of osteoarthritis are complex. The etiology of osteoarthritis is complex and unclear. The risk of developing osteoarthritis in the hands increases with age and long-term hand movements. Treatment of osteoarthritis is categorized into basic treatment (exercise, physiotherapy, mobility aids), medication (NSAIDs, analgesics, etc.) and surgery (arthroplasty, osteotomy, etc.). Among the medications are aspirin, indomethacin, acetaminophen, etc., which have both anti-inflammatory and analgesic properties. You should consult your doctor for specific treatment options and medications.