Carpal tunnel syndrome is a condition that affects the hand, wrist, and arm. It happens when the median nerve gets compressed, or squeezed, at the wrist. The median nerve is a large nerve running from the palm to the upper arm.
CTS is common in pregnancy and can occur in 31% to 62% of people who are pregnant. Researchers aren’t sure why CTS is so common in pregnancy. They speculate that pregnancy-related hormones might contribute to increased swelling throughout the body.