Initially, I used to drain visible cysts on the wrist, but they can return with that form of treatment. Surgical excision is the only way I've ever removed a cyst, but even then they can return if the joint continues to be overused. However, surgery is only an option if rest and physical therapy does not work. After the ganglion is treated, the joint is immobilized for a short period of time. Passive exercise with a wide range of motion, ultrasound and ice are then used to rehabilitate the patient.
Most people respond fairly rapidly.
Of course, all divers want to prevent injury, and Nevins suggests working to reach a peak level of performance is the best method of prevention. But, slowly increasing the duration and intensity of training can help.