Karpaltunnelsyndrom

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Carpal Tunnel Syndrome

Medical Author:

William C. Shiel Jr., MD, FACP, FACR

William C. Shiel Jr., MD, FACP, FACR

Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Medical Editor:
Melissa Conrad Stöppler, MD

Melissa Conrad Stöppler, MD

Melissa Conrad Stöppler, MD

Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler’s educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.

Carpal tunnel syndrome facts

  • Carpal tunnel syndrome is caused by irritation of the median nerve at the wrist.
  • Any condition that exerts pressure on the median nerve can cause carpal tunnel syndrome.
  • Symptoms of carpal tunnel syndrome include numbness and tingling of the hand.
  • Diagnosis of carpal tunnel syndrome is suspected based on symptoms, supported by physical examination signs, and confirmed by nerve conduction testing.
  • Treatment of carpal tunnel syndrome depends on the severity of symptoms and the underlying cause.

Carpal Tunnel Syndrome Pictures Slideshow: Causes, Symptoms, and Treatment

What is carpal tunnel syndrome?

Carpus is a word derived from the Greek word karpos, which means "wrist." The wrist is surrounded by a band of fibrous tissue that normally functions as a support for the joint. The tight space between this fibrous band and the wrist bone is called the carpal tunnel. The median nerve passes through the carpal tunnel to receive sensations from the thumb, index, and middle fingers of the hand. Any condition that causes swelling or a change in position of the tissue within the carpal tunnel can squeeze and irritate the median nerve. Irritation of the median nerve in this manner causes tingling and numbness of the thumb, index, and the middle fingers — a condition known as "carpal tunnel syndrome."

What conditions and diseases cause carpal tunnel syndrome?

For most patients, the cause of their carpal tunnel syndrome is unknown. Any condition that exerts pressure on the median nerve at the wrist can cause carpal tunnel syndrome. Common conditions that can lead to carpal tunnel syndrome include obesity, pregnancy, hypothyroidism, arthritis, diabetes, and trauma. Tendon inflammation resulting from repetitive work, such as uninterrupted typing, can also cause carpal tunnel symptoms. Carpal tunnel syndrome from repetitive maneuvers has been referred to as one of the repetitive stress injuries, although this relationship remains controversial in the evidence based literature. Some rare diseases can cause deposition of abnormal substances in and around the carpal tunnel, leading to nerve irritation. These diseases include amyloidosis, sarcoidosis, multiple myeloma, and leukemia.

Medically Reviewed by a Doctor on 11/18/2015

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Carpal Tunnel Syndrome – ExperienceQuestion: Please describe your experience with carpal tunnel syndrome.
Carpal Tunnel Syndrome – Symptoms and SignsQuestion: What are your carpal tunnel syndrome symptoms and signs?
Carpal Tunnel Syndrome – TreatmentQuestion: What was the treatment for your carpal tunnel syndrome?
Carpal Tunnel Syndrome – CausesQuestion: Did you develop carpal tunnel while pregnant, from computer use, or something else? Please discuss the cause.
Carpal Tunnel Syndrome – DiagnosisQuestion: Describe the exams that led to a diagnosis of carpal tunnel syndrome. Did you think it was something else?

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