• Contrast bath---It is a form of treatment where a limb or the entire body is immersed in warm water followed by the immediate immersion of the limb or body in ice water. This procedure is repeated several times, alternating hot and cold. Note that the treatment should always end in the ice water, as heat will induce the body's inflammatory response, while cold helps to decrease inflammation.

You can try wrist splints first see that helps. If not you can have steroid injection in to the bursa or synoium - risk of tendon rupture if goes in to the tendon.