The carpal tunnel is a narrow passageway located in the wrist that opens into the hand. Carpal tunnel syndrome is a condition that puts pressure on the nerves running through the wrist that causes numbness and pins and needles, weakness and pain in the hand that may radiate up to the shoulder.
There are different causes or combinations of causes for carpal tunnel syndrome that include:
- In particular rheumatoid arthritis which can cause swelling and inflammation.
- Pregnancy due to a change in hormones that can cause fluid retention and compression of the nerve. This will usually remedy itself once the pregnancy is over.
- Wrist fractures which can cause irritation or reduce the amount of space in the carpal tunnel.
- Genetic factors
- In particular awkward postures of the hand and wrist or repetitive hand movements.




