wristankletendonitis,
In the hands, carpal tunnel syndrome is compression of the median nerve within the carpal tunnel. This produces numbness and tingling in the radial digits (thumb, index finger, middle finger, and half of the ring finger).
Compression of the ulnar nerve within Guyon's canal will produce numbness and tingling in the small finger and half of the ring finger.
While inflammation of certain tendons can cause compression of the nerves, producing the neurological symptoms. However, carpal tunnel syndrome is not a disorder of the tendons.
The pain associated with carpal tunnel syndrome is due to the ischemia of the nerve, not tendonitis.
So, again, while tendonitis can cause carpal tunnel syndrome, CTS is not a tendonitis.
If you are having significant problems with numbness and tingling in all four limbs, you also have to be concerned about a systemic neuropathy. The most common cause of systemic neuropathy is diabetes. Thyroid disorders can also cause systemic neurological symptoms.
You should speak with your physician about your concerns.
Good luck.