What makes my wrist hurt when i bend it?

Pain with motion can: Be from tendinitis, joint swelling, bruising, ligament injury, fracture, mild arthritis in a 40+ year old person, or even fatigue and a little soreness from activity. Other things such as inflammation from infection, gout or other causes too can occur. Typical treatments involve ice, rest splinting , and over the counter anti-inflammatory medication but seeking care if symptoms do not get better.