The causes of thumb pain are multifactorial. They include:
- Overuse of the thumb: Just like any other joint, the thumb can be overused or overextended. When your thumb is overused, it can feel sore and painful at the joint. A joint that is overused may feel warm and tingling, in addition to being painful.
- Injury or sprain: Thumb sprains, a jammed thumb, and “skier’s thumb” are all caused by damage to the ligaments in your thumb. These injuries, commonly caused during contact sports or falls, can cause pain at the site of your joint. A sprained thumb could also result in swelling and stiffness.
- Arthritis: The cushion-like cartilage inside your thumb joint can break down as you age, causing the symptoms of thumb arthritis. Other symptoms include loss of grip strength and thumb mobility. Thumb arthritis can be related to osteoarthritis (which affects the joint and the bone) or rheumatoid arthritis (an auto-immune condition).
- Carpal tunnel syndrome: Pain at your thumb joint can be a symptom of carpal tunnel syndrome. Carpal tunnel syndrome pain can feel like weakness, numbness, tingling, or burning at your wrist, in your fingers, or in the joints of your hands.