You should have wrist xrays done first if not already. Wrist splints worn at night provide some relief. They should be the kind that props your wrist in a slightly hyperextended position (this opens the carpal canal, relieving pressure). Optional: may also consider a nerve conduction test to confirm carpal tunnel--it may be coming from your neck.

another option is a cortisone injection in the wrist. This can be done one to three times per wrist. Effects can last permanently or just a few months or years.

Some Physical Therapists use an intrared laser (as an outpatient treatment) that allegedly breaks up scar tissue (more common in europe)
Source(s):
My clinical practice

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