Understanding carpal tunnel syndrome: Causes, symptoms, and treatment
Carpal tunnel syndrome (CTS) is a common condition that affects the hand and wrist, often caused by pressure on the median nerve as it passes through the carpal tunnel—a narrow passageway in the wrist. This nerve controls sensations and movement in parts of the hand, including the thumb and fingers. When it becomes compressed, it can lead to discomfort and impaired function.
Causes and risk factors
The main cause of CTS is repetitive hand or wrist motion, such as typing, writing, or using vibrating tools. It can also develop from wrist injuries, arthritis, diabetes, pregnancy, or fluid retention, all of which can increase pressure within the carpal tunnel. Women are more likely than men to develop CTS, possibly due to having smaller wrist anatomy.
Symptoms
Common symptoms include numbness, tingling, and burning sensations in the thumb, index, and middle fingers. Many people experience pain that radiates up the arm or a feeling of weakness when gripping objects. Symptoms often worsen at night or during repetitive activities, and in severe cases, muscle wasting at the base of the thumb may occur.
Diagnosis and treatment
Diagnosis typically involves a physical examination, nerve conduction studies, and imaging tests to rule out other conditions. Early treatment can help prevent long-term damage. Non-surgical options include wrist splinting, anti-inflammatory medications, and activity modification. Physical therapy and ergonomic adjustments—such as using a proper keyboard setup—can also reduce strain. In more severe or persistent cases, surgery may be required to release pressure on the median nerve.
Prevention
Preventive measures include taking regular breaks from repetitive tasks, maintaining good wrist posture, and performing stretching exercises. With early detection and proper management, most people with carpal tunnel syndrome can relieve their symptoms and maintain normal hand function.
