Carpal Tunnel Syndrome: Symptoms, Causes, and Treatment Options

Carpal tunnel syndrome happens when the median nerve gets compressed as it passes from your arm through a narrow space in your wrist called the carpal tunnel. That pressure can trigger numbness, tingling, pain, and sometimes weakness—often in ways that are annoying at first and disruptive later.

If you’re in the Greater St. Louis area and you want a conservative, practical plan that helps you keep working and living normally and gets you back to the activities you love, hand therapy from experienced St. Louis physical therapists at Axes is often the best first place to start.

Call the Axes location nearest you, request an appointment online, or come to any of our locations for a free injury screening to get started.

Quick Summary

• Carpal tunnel syndrome occurs when the median nerve is compressed in the wrist, causing numbness, tingling, pain, and sometimes weakness in the hand.
• Symptoms often worsen at night and usually affect the thumb through part of the ring finger, while the little finger is typically spared.
• Repetitive hand use, wrist position, swelling, and certain health conditions can all increase pressure on the nerve and contribute to symptoms.
• Diagnosis is based on symptoms, physical exam findings, and sometimes nerve testing to confirm nerve compression.
• Conservative treatment is often effective, especially when started early, and may include activity modification, night splinting, and physical or hand therapy.
• Without treatment, symptoms can progress, potentially leading to long-term nerve damage and loss of hand function.

What Is Carpal Tunnel Syndrome?

Your carpal tunnel is basically a tight passageway at the wrist. The “floor” and sides are formed by the small wrist bones, and the “roof” is a strong band of tissue called the transverse carpal ligament. The median nerve travels from the neck, down the arm and forearm, and through the carpal tunnel into the hand.

When pressure builds inside that space—because of swelling, irritation, or structural changes—the median nerve can get squeezed. That’s when people start noticing changes in sensation (tingling/numbness) and sometimes weakness in tasks like gripping, pinching, or fine motor work.

Common Symptoms of Carpal Tunnel Syndrome

Carpal tunnel syndrome doesn’t always announce itself with a big dramatic pain spike. A lot of people notice a pattern first:

Common carpal tunnel syndrome symptoms include:

• Numbness or tingling in the thumb, index finger, middle finger, and often part of the ring finger
• Burning, aching, or electric-like sensations in the hand or wrist
• Nighttime symptoms, such as pain or tingling that wakes you from sleep
• A need to shake the hand out to “wake it up” or relieve numbness
• Hand weakness or clumsiness, especially with gripping or fine motor tasks like buttoning clothing, holding keys, writing, or using tools
• Dropping objects more frequently
• Pain that feels like it’s coming from deep within the wrist or hand and may sometimes travel up the forearm

Common symptom patterns

In addition to the symptoms themselves, clinicians often look for specific patterns that suggest carpal tunnel syndrome:

• Symptoms that worsen at night or are noticeable first thing in the morning
• Numbness or tingling during sustained gripping or static wrist positions, such as holding a phone, reading a newspaper, or gripping a steering wheel
• Symptoms that ease temporarily with rest, changing wrist position, or shaking the hand

A helpful “finger map” clue

One important detail is which fingers are affected. The median nerve does not supply sensation to the little finger, so carpal tunnel symptoms usually spare the pinky. If numbness or tingling consistently involves the little finger, it may point toward a different nerve or another cause of hand symptoms.

What Causes Carpal Tunnel Syndrome?

The “why” is often a mix of factors. In many cases, it’s not one single event; it’s pressure building over time in a tight space.

Common contributors include:

Repetitive or sustained wrist/hand demands

Typing, gripping, assembly work, tool use, and anything that keeps your wrist in awkward positions for long stretches can aggravate symptoms—especially if breaks are limited.

Swelling and inflammation

Anything that increases swelling in the wrist – such as a wrist sprain or period of heavy overuse – can crowd the carpal tunnel and irritate the median nerve. Even small increases in inflammation can raise pressure in this tight space, which is why rest, icing, and wrist splinting are often effective early strategies when symptoms are mild.

Anatomy and structural changes

Some people have a naturally narrower tunnel, and changes from arthritis or wrist trauma can alter the space over time.

Health and life factors that raise risk

Certain medical conditions are associated with higher CTS risk (for example: rheumatoid arthritis, diabetes, hypothyroidism, obesity).

Pregnancy is also a common time for symptoms to show up, with symptoms often improving after delivery, though that group can be at higher risk later.

Smoking, excessive alcohol use, and poor diets can also contribute to the condition.

How St. Louis Physical Therapists Diagnose Carpal Tunnel Syndrome

Diagnosis is usually a combination of your symptom story and a physical exam, sometimes with additional testing.

The symptom pattern matters (a lot)

Diagnosis often begins by reviewing the symptom patterns described above, particularly nighttime symptoms and numbness that occurs with sustained wrist positions or prolonged gripping.

Common clinical tests used in diagnosis

During the physical exam, our St. Louis physical therapists may use simple in-office tests to see whether certain positions or light pressure reproduce symptoms associated with median nerve irritation, including:

• Phalen’s test – holding the wrist in a flexed position to see if numbness or tingling develops in the fingers
• Tinel’s sign – gently tapping over the median nerve at the wrist to check for tingling or “electric” sensations into the hand
• Strength testing – assessing grip strength and thumb muscles supplied by the median nerve
• Sensation testing – checking for reduced or altered feeling in the fingers commonly affected by carpal tunnel syndrome

These findings are considered alongside the symptom history to help determine whether the median nerve is being compressed.

When imaging or nerve tests are used

Depending on your case, your St. Louis physical therapist may also recommend or request:

• X-rays – used to look for bone or joint issues such as arthritis or prior fracture; they are not used to diagnose carpal tunnel syndrome itself
• Ultrasound – used to visualize the median nerve and surrounding structures and assess whether the nerve is being compressed at the wrist
• Nerve conduction studies and electromyography (EMG) – used to evaluate how well the median nerve and affected muscles are functioning and to help distinguish carpal tunnel syndrome from other nerve conditions

Electrodiagnostic testing is often considered the most definitive way to confirm median nerve compression when the diagnosis is unclear or symptoms are more advanced.

At-Home Treatment Options for Carpal Tunnel Syndrome in St. Louis

Most carpal tunnel treatment plans in St. Louis start conservatively. The goal is straightforward: reduce pressure/irritation on the median nerve, calm symptoms down, and change whatever is feeding the problem.

What you can do right away (mild symptoms)

If symptoms are mild, a short window of home care (1–2 weeks) may relieve symptoms, including:

• Resting from aggravating activities
• Icing 10–15 minutes, 1-2 times an hour
• Considering NSAIDs for pain/swelling relief
• Wearing a wrist splint to reduce pressure on the median nerve

Early on, simple steps like taking more frequent breaks, avoiding symptom-provoking activities, and using cold packs can help manage irritation and swelling.

How St. Louis Physical Therapy Treats Carpal Tunnel Syndrome

Splints and “try not to do the annoying thing” advice are fine… but most people need a plan that actually addresses why the nerve is being irritated in the first place. That’s where St. Louis physical therapy and hand therapy come in.

A good PT/hand therapy program in St. Louis often focuses on:

• Reducing nerve irritation
• Improving wrist/forearm mobility and strength
• Addressing posture and movement patterns upstream (yes, even the shoulder/neck can matter for how your arm loads)
• Helping you keep doing your job and daily tasks with less strain

What you might do in therapy

Physical therapy for carpal tunnel syndrome isn’t one-size-fits-all. Treatment is adjusted based on symptoms, daily demands, and how the wrist and hand respond over time. While no two plans are identical, your St. Louis physical therapist may include some combination of the following components in your carpal tunnel treatment.

1) Symptom-calming strategies

Early treatment focuses on reducing irritation and giving the median nerve a chance to settle down. This phase isn’t about pushing through pain or trying to fix everything at once.

Examples may include:

• Guidance on night splinting to keep the wrist in a neutral position
• Activity modifications, such as changing how long or how often certain tasks are performed
• Short-term adjustments to reduce strain during work, driving, or daily tasks
• Short-term taping support (including Kinesio Taping®) to help reduce irritation during activity when appropriate

The goal is to calm symptoms without requiring you to completely stop normal activities.

2) Mobility and tendon/nerve movement

Mobility work focuses on how well the wrist, forearm, fingers, and surrounding tissues move—not just the nerve itself. Limited motion or stiffness anywhere along the arm can increase strain at the wrist and contribute to symptoms.

Treatment may include:

• Wrist and forearm joint mobility to improve bending, straightening, and rotation
• Soft tissue work to reduce stiffness in the forearm muscles and surrounding structures (including manual therapy and instrument assisted soft tissue mobilization when appropriate)
• Finger and thumb mobility to address stiffness or protective guarding
• Targeted tendon or nerve gliding exercises, used selectively when stiffness or sensitivity is present, such as:
  • Tendon gliding: controlled finger movements (open hand, partial fist, full fist) to help the flexor tendons move more smoothly through the carpal tunnel
  • Median nerve gliding: gentle arm, wrist, and finger movements that change nerve position to reduce sensitivity and improve mobility
• In some cases, trigger point dry needling may be used to address forearm muscle tension that contributes to wrist and hand strain

These movements help reduce unnecessary strain at the wrist and allow the hand and arm to move more efficiently. Tendon and nerve gliding exercises are tools—not a standalone solution—and are introduced gradually as part of a broader treatment plan.

3) Strength, endurance, and “real-life” training

Strengthening goes far beyond squeezing a stress ball. The focus is on rebuilding tolerance for the activities you actually need to do.

This may include:

• Progressive grip and pinch strengthening, starting light and increasing as symptoms allow
• Endurance training, such as sustained holds or repeated movements, to prepare for typing, tool use, or prolonged hand activity
• Functional strengthening, including lifting, carrying, pushing, or pulling tasks that mimic work or daily demands
• Position-specific training, teaching the wrist and forearm to tolerate load in neutral and slightly varied positions

The goal is to help you return to daily activities without symptoms flaring back up.

4) Ergonomics that actually work

“Sit up straight” isn’t a plan. Ergonomics is about making realistic changes that reduce unnecessary strain on the wrist and hand.

This may involve:

• Adjusting keyboard, mouse, or tool positioning so the wrist stays closer to neutral
• Reducing grip force demands during work or daily tasks
• Changing task setup, height, or sequencing to limit prolonged wrist strain

Small adjustments can significantly reduce pressure on the median nerve over the course of a day. For work-related cases, advanced work rehabilitation and functional capacity evaluation may also be used to help guide a safe, confident return to job demands.

5) Therapeutic ultrasound (when appropriate)

In some cases, therapeutic ultrasound may be used as part of treatment. When included, it’s applied with specific settings and dosage based on individual presentation. Ultrasound is not used in isolation, but as one component of a broader plan aimed at reducing irritation and improving tissue tolerance.

6) Pre- and post-surgical rehabilitation (when needed)

If injections or surgery become part of the plan, pre- and post-surgical rehabilitation can help restore mobility, strength, and functional use of the hand and wrist, and support a smoother return to work and daily activities.

Frequently Asked Questions About Carpal Tunnel Syndrome Treatment in St. Louis

Is carpal tunnel syndrome always caused by typing?

Not always. While repetitive wrist and hand use can contribute, carpal tunnel syndrome is often influenced by multiple factors, including anatomy, swelling or inflammation, wrist positioning, and underlying health conditions.

Why is carpal tunnel syndrome worse at night?

Why is carpal tunnel syndrome worse at night?

Nighttime symptoms are common because the wrist often bends during sleep and fluid shifts can increase pressure inside the carpal tunnel. Wearing a wrist splint at night helps keep the wrist in a neutral position and can reduce symptoms.

How do I know it’s carpal tunnel syndrome and not something else?

Diagnosis is based on your symptom pattern, physical exam findings, and, when needed, additional testing such as nerve conduction studies or EMG to confirm nerve compression or rule out other causes.

Can physical therapy really help carpal tunnel syndrome?

Yes. Physical and hand therapy are commonly used as part of conservative care and may include mobility work, strengthening, ergonomic adjustments, and activity modifications, often alongside splinting and other symptom-management strategies.

When do injections make sense?

Corticosteroid injections may be considered when symptoms don’t improve with other conservative care and short-term pain relief is needed to reduce inflammation and nerve irritation.

When is surgery recommended?

Surgery is typically considered when conservative treatment doesn’t provide relief, symptoms are severe or long-standing, or there is concern about ongoing nerve damage.

Physical Therapy for Carpal Tunnel Syndrome in Greater St. Louis

Axes Physical Therapy serves patients throughout the Greater St. Louis area with individualized care provided by licensed physical and occupational therapists. Our St. Louis physical therapists average more than 15 years of experience, and our clinics offer specialized hand therapy services, including care from Certified Hand Therapists (CHTs) for complex hand and wrist conditions such as carpal tunnel syndrome.

If symptoms are starting to interfere with sleep, work, or everyday activities you don’t usually think twice about—like opening jars, gripping the steering wheel, texting, or lifting—it’s a good time to get a plan.

Schedule an evaluation with Axes Physical Therapy in St. Louis to confirm what’s going on and map out a treatment path that fits your life. You can call the Axes location nearest you, request an appointment online, or come to any of our locations for a free injury screening to get started.