The simple answer is to offer a mechanical decompression of the carpal tunnel instead of trying to cover over the pain.
A handshake compresses the median nerve in the carpal tunnel but shaking the hands temporarily decompresses the median nerve in the carpal tunnel.
Fortunately, surgery is almost always a last resort only after conservative treatment has failed. We have a high success rate for carpal tunnel treatment cases accepted here. If your case looks to be surgical, then we will recommend that route. Fortunately, that is a very rare occurrence here mainly due to the high-dosage class IV laser's ability to reduce inflammation and to provide healing to the tendons and the median nerve combined with gentle wrist adjustments to re-establish the normal tunnel positioning, therefore, taking the truck off the garden hose so to speak.
We don't ever recommend injections for carpal tunnel unless conservative measures such as wrist manipulation, Graston technique, stretches, ADL modifications, and class IV laser has been ineffective to a resolution to the carpal tunnel syndrome.