Tendonitis is inflammation of a tendon, most often from overusing it. It can show up almost anywhere a tendon connects muscle to bone — the base of the thumb, wrists, forearms, hands, elbows, shoulders, knees, ankles, and feet — but for desk workers, the wrist and elbow are the usual suspects.
In short: tendonitis from computer work develops when small, repetitive movements like typing and mousing irritate the same tendons for hours, often made worse by poor posture and no breaks. Early signs are pain when you press or use the area, stiffness, and swelling. Catching it early — and changing how you work — is the best way to stop it from becoming a constant ache.
Key takeaways
- Tendonitis is inflammation of a tendon caused mostly by repetitive, minor strain over a long period.
- Tenosynovitis (wrist) and epicondylitis, or “tennis elbow,” are the most common forms among office workers.
- Watch for pain under pressure, restricted movement, and warmth or swelling around the tendon.
- Frequent breaks, end-of-day stretches, and a neutral wrist position help prevent flare-ups.
- If symptoms persist, see a doctor — only a clinician can diagnose and treat tendonitis.
Tendonitis is one of the leading repetitive strain injuries (RSIs) in the U.S., and it rarely appears in isolation. Our guide to keeping work injuries at bay shows how the same workstation habits drive wrist, neck, and back problems.
What Causes Tendonitis From Computer Work?
Repetitive, low-force motions repeated over months are the main cause of tendonitis at work. Each keystroke or mouse click is tiny, but thousands of them a day on the same tendons add up.
Risk climbs when you add:
- Incorrect posture — wrists bent up or sideways, shoulders hunched, elbows splayed.
- Static positions — holding the hand in one position without breaks.
- Poor conditioning — skipping stretches before and after demanding activity, whether that's exercise or a long day of typing.
Two forms dominate among daily office workers. Tenosynovitis, or tendonitis of the wrist, is the leading cause of discomfort, and epicondylitis (tendonitis of the elbow, often called "tennis elbow") comes in second. Many doctors know that people who type all day are prone to these conditions, yet many people don't realize they have them until the pain is constant.
What Are the Symptoms of Wrist Tendonitis?
The three hallmark wrist tendonitis symptoms are pain, restricted movement, and swelling. They tend to build gradually, which is why knowing the stages matters.
Pain
In the early stages, pain usually appears only when pressure is applied to the affected tendon. Over time it can turn into a constant, nagging ache — even at rest. Some people also describe a burning sensation around the tendon.
Restricted movement
Stiffness or a gradual loss of range of motion around the tendon is very common. With wrist tendonitis, for example, you may no longer be able to bend your wrist all the way.
Swelling
As the tendon becomes inflamed, the area can turn red and swollen, and fluid buildup may make it feel warm to the touch.
| Stage | What you may notice | What to do |
|---|---|---|
| Early | Pain only when you press on or use the tendon | Start prevention: breaks, stretches, neutral wrist posture |
| Middle | Pain during normal tasks, stiffness, some swelling | See your doctor and adjust your workstation |
| Advanced | Constant ache at rest, burning, warmth, limited motion | Get medical treatment before returning to full workload |
How Can You Prevent Tendonitis at Work?
Prevention comes down to interrupting repetition, keeping joints in neutral positions, and giving tendons time to recover. If you notice early symptoms, these steps can ease them or stop them altogether.
- Take frequent breaks. If you type for eight hours a day, take short breaks every hour. It's the most universal piece of ergonomic advice for a reason.
- Brace the area. A wrist or elbow brace can help limit the movements that aggravate the tendon.
- Stretch at the end of the day. Just as you would after exercise, stretch your wrists and elbows after a long workday.
- Keep the wrist neutral. A soft wrist rest such as the Goldtouch Gel-Filled SlimLine Wrist Rest keeps the wrist from bending upward between keystrokes.
- Refine your technique. Light keystrokes and moving the mouse from the elbow rather than the wrist make a real difference — see our typing and mousing techniques.
Equipment that reduces tendon strain
A standard mouse forces the forearm to rotate palm-down all day, which loads both wrist and elbow tendons. A vertical design such as the Evoluent VerticalMouse 4 keeps the hand in a handshake position. Split, adjustable keyboards do the same for typing by letting the wrists stay straight.
The posture habits that protect your tendons protect your back as well. If you're also stiff at the end of the day, read about what triggers lower back pain at the office and our practical tips for relieving lower back pain at your desk.
How Is Tendonitis Treated?
If you're experiencing middle-stage symptoms, see your doctor: home remedies may relieve symptoms, but only a clinician can diagnose and treat tendonitis. With your doctor's guidance, these approaches are commonly used at home:
- Rest. Give the irritated tendons a break. How long depends on severity, but around two weeks is a common rule of thumb.
- Exercise. Gradually work the muscles around the tendon to "wake them up" as you reintroduce movement.
- Stretch — carefully. After several weeks of rest, tendons won't be as limber as before, so ease back in.
- Brace. Braces designed to restrict movement can hold the wrist or elbow in a healthy position while it heals.
- Topical relief. A topical anti-inflammatory may relieve pain; ask your doctor or pharmacist what's right for you.
Recommended Products for Tendonitis Prevention
Is Your Workstation Making It Worse?
Using the right ergonomic equipment — and setting it up for your body — is one of the most effective ways to prevent RSIs like tendonitis. In an ergonomic evaluation, we look at your keyboard height, mouse position, chair, and work habits together, so the fix addresses the cause rather than just the symptoms.
👉 Request an Ergonomic Evaluation | Browse Keyboards & Mice
Frequently Asked Questions
Can typing cause tendonitis?
Yes. Typing and mousing involve thousands of small, repetitive movements a day, and combined with bent wrists or no breaks they can inflame the tendons of the wrist and forearm. Wrist tenosynovitis is the leading cause of discomfort among office workers.
What does wrist tendonitis feel like?
Early on, it usually hurts only when you press on or use the tendon. As it progresses, you may feel a constant ache or burning, stiffness that limits how far you can bend the wrist, and warmth or swelling.
How long does tendonitis take to heal?
It depends on severity. Resting the tendon for around two weeks is a common rule of thumb for mild cases, but persistent or advanced tendonitis needs a doctor's assessment and can take longer.
Is tendonitis the same as carpal tunnel syndrome?
No. Tendonitis is inflammation of the tendon itself, while carpal tunnel syndrome is pressure on the median nerve in the wrist, often caused by swollen tendons. They share risk factors, and a doctor can tell them apart.
Should I keep working at my computer with tendonitis?
Talk to your doctor first. If you continue working, take breaks every hour, keep your wrists neutral, and consider equipment like a vertical mouse or wrist rest to reduce strain while the tendon recovers.
This article shares general ergonomic guidance based on our fitting and evaluation experience and is not medical advice. If you have severe, persistent, or worsening symptoms, talk to your doctor or physical therapist.
About the Author
Angela Maldonado writes for Ask Ergo Works, where our ergonomic specialists have been fitting chairs and workstations and running ergonomic evaluations from our Palo Alto showroom for more than 30 years.
