Skier's Thumb/Gatekeeper's Thumb
The term “skier’s, or gamekeeper’s thumb” refers to a condition in which one undergoes a tear of the Ulnar Collateral Ligament (UCL). As the name suggests, this ailment is seen most often in skiers and occurs when the thumb becomes hyper-extended back towards the wrist or to the side. Common symptoms include pain, swelling, weakness or discoloration of the skin at the base of the thumb. To learn more, visit National Institutes of Health.