It takes two to four weeks for a bruised finger to heal, according to MyHealth.Alberta.ca. A bruised finger is normally not serious and often resolves on its own.
Home treatment for a bruised finger involves applying ice or a cold pack to the finger in 10- to 20-minute increments periodically throughout the day, explains MyHealth.Alberta.ca. Elevating the hand to a level above the heart helps keep swelling to a minimum.
If a patient seeks medical treatment for a bruised finger, the doctor may tape the bruised fingers together or apply a splint, notes MyHealth.Alberta.ca. He may also prescribe pain medication or suggest that the patient take an over-the-counter pain reliever. Once the bruised finger begins to heal, the doctor may advise the patient to perform certain exercises to regain strength in the finger.