Carpal Tunnel Syndrome: Causes, Symptoms, and Treatment Explained

Tingling or numbness in your fingers, especially at night, waking you up with a burning sensation in your hand? These are classic signs of carpal tunnel syndrome — one of the most common nerve compression problems affecting the hand and wrist. Here's everything you need to know, along with two Hindi-language explainer videos.

What Is Carpal Tunnel Syndrome?

The carpal tunnel is a narrow passageway on the palm side of your wrist, formed by small wrist bones and a tough ligament that lies over them. The median nerve — which controls sensation in the thumb, index, middle, and part of the ring finger — passes through this tunnel along with several tendons.

When tissues around the tendons swell or the tunnel narrows for any reason, the median nerve gets compressed. This pressure disrupts nerve signals, leading to the numbness, tingling, and weakness known as carpal tunnel syndrome (CTS).

Common Causes and Risk Factors

• Repetitive hand and wrist movements — typing, assembly line work, prolonged mobile phone use
• Wrist anatomy — some people simply have a naturally narrower carpal tunnel
• Pregnancy, due to fluid retention that can put pressure on the nerve
• Health conditions such as diabetes, hypothyroidism, and rheumatoid arthritis
• Wrist injuries, fractures, or dislocations that alter the space within the tunnel
• Obesity, which is linked with a higher risk of developing CTS

Symptoms to Watch For

• Numbness or tingling in the thumb, index, middle, and part of the ring finger
• A burning or "pins and needles" sensation, often worse at night
• Weak grip strength or a tendency to drop objects
• A feeling that the fingers are swollen, even when they aren't
• Pain that can radiate up the forearm in more advanced cases

Symptoms often start gradually and may only appear at night. Left untreated, they can become constant and cause lasting muscle weakness at the base of the thumb.

How Is It Diagnosed?

A doctor will typically begin with a physical examination, checking sensation, strength, and specific movements that reproduce symptoms (such as the Tinel or Phalen tests). To confirm the diagnosis and gauge severity, they may order:

• Nerve conduction studies – Measures how quickly electrical signals travel through the median nerve.
• Electromyography (EMG) – Assesses the electrical activity of the muscles controlled by the median nerve.
• Ultrasound or MRI – Occasionally used to look for structural causes of compression.

Treatment Options

Treatment depends on how severe and how long-standing the symptoms are:

• Wrist splinting, especially at night, to keep the wrist in a neutral position and relieve pressure on the nerve.
• Activity modification — adjusting how you type, hold tools, or use your phone, along with regular breaks.
• Anti-inflammatory medication to reduce swelling and pain.
• Corticosteroid injections into the carpal tunnel to reduce inflammation around the nerve.
• Physiotherapy and nerve-gliding exercises to improve mobility and reduce nerve irritation.
• Surgery (carpal tunnel release) for moderate-to-severe cases that don't respond to conservative treatment — the surgeon divides the ligament pressing on the nerve to create more space.

What to Expect From Carpal Tunnel Release Surgery

Carpal tunnel release is usually a quick, outpatient procedure performed under local anesthesia. It can be done as open surgery, through a small incision in the palm, or endoscopically, using a tiny camera and instruments through one or two small incisions. Most patients go home the same day, and while grip strength returns gradually over weeks to months, numbness and tingling often start improving within days.

Preventing Carpal Tunnel Syndrome

• Keep your wrist in a neutral, straight position while typing or using tools
• Take frequent breaks during repetitive hand tasks and stretch your wrists and fingers
• Use ergonomic keyboards, mice, and wrist supports where possible
• Maintain a healthy weight and manage underlying conditions like diabetes
• Don't ignore early tingling — addressing symptoms sooner leads to easier, faster recovery

The Takeaway

Carpal tunnel syndrome is common, well understood, and very treatable — especially when caught early. Many people find significant relief with simple measures like splinting and activity changes, while those with more advanced nerve compression can benefit greatly from a straightforward surgical release. If you're noticing numbness or tingling in your hand, don't wait it out — an orthopedic or hand specialist can help you find the right treatment path.