Carpal tunnel is the compression of the median nerve at the wrist, it can causes thickening of the sheath and transverse carpal ligament. It is due to repetitive actions and will come on gradually. Things such as excessive wrist extension and flexion, numbness, tingling on the radial side of the hand from the ring finger, pain or waking at night, clumsiness or weakness in hand all can affect carpal tunnel. If you have carpal tunnel you can continue activities, but may have to alter slightly so that you don't increase the pain. It's important to avoid heavy manual work for about 2 months. Myotherapy is a therapy that can assist in relieving the pain and improve movement.
You don't have to be a tennis player to have what they call tennis elbow. It's all to do with the repeated over extended wrist action. May find that when you bend your hand towards your wrist there is pain as well as pain on the outside of the elbow.
Remedial massage and Myotherapy techniques can assist with the pain.