Sometimes you can release a locked digit by massaging it at its base. But it's actually arising from the base of the affected digit. It may seem like the problem is related to the middle knuckle of the finger or the top knuckle of the thumb. You may find that the finger or thumb is locked toward the palm when you wake up and gradually releases over the course of the day. Pain may felt toward the end of the finger or thumb or in the palm. The characteristic snapping sensation can start suddenly, or develop gradually. The first symptoms of trigger finger tend to be pain and a slight thickening at the base of the affected finger or thumb. The more often the tendon catches, the greater the swelling and irritation, and the greater the swelling and irritation, the more the tendon catches. The tendon can catch and get stuck, causing pain, popping, or a catching feeling in the finger or thumb. If the tendon develops a knot, or if the sheath covering the tendon swells and narrows, the tendon can't move as easily. The tendon normally glides smoothly through the sheath that surrounds it. Trigger finger begins in the tendons that bend the fingers and the connective tissue pulleys that hold those tendons close to the finger bones. This condition, officially known as stenosing tenosynovitis, usually affects the thumb or ring finger, though it can affect any finger. Although the name may conjure up visions of sharpshooters and hunters, it comes from the trigger-like snap that occurs when the finger suddenly releases. Trigger finger is a painful condition in which a finger catches or becomes locked when you try to straighten or bend it.
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