De Quervain's tendinosis is a condition that causes pain, tenderness, and swelling along the thumb side of your wrist. The condition develops when the tendons.
Pain in your thumb can be caused by several underlying health conditions. Figuring out what's causing pain your thumb might depend on.
Thumb arthritis is common with aging and occurs when cartilage wears away from the ends of the bones that form the joint at the base of your thumb — also known as the carpometacarpal (CMC) joint. Thumb arthritis can cause severe pain, swelling, and decreased strength and range of.