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Information

Carpal Tunnel Syndrome

Small space, big impact: what carpal tunnel syndrome is, what it feels like and what can cause it.

Drawing of a hand showing the median nerve running through the carpal tunnel at the wrist, where it can get squeezed.

What is carpal tunnel syndrome?

Carpal tunnel syndrome (CTS) happens when the median nerve is squeezed in a narrow space in your wrist called the carpal tunnel. This can cause pain, numbness and tingling in your hand and fingers.

Common signs and symptoms

  • Numbness or tingling in your thumb, index, middle or part of your ring finger
  • Pain in your hand, wrist or forearm
  • Weakness in your hand (like dropping things)
  • Symptoms may be worse at night or with certain activities (like holding a phone, reading or driving)

What can cause it?

  • Repetitive hand movements (for example, typing, sewing or manual work)
  • Certain health conditions (for example, diabetes or thyroid problems)
  • Pregnancy (sometimes temporary)
  • Injury or swelling in the wrist

Remember

If you have ongoing numbness, weakness or pain, it’s important to talk to a healthcare provider. Early treatment can help prevent long-term problems.

Take care of your hands. They work hard for you!