Tendinitis: A Comprehensive Guide
Medically reviewed by Andre Stone | MD, University of Pittsburgh School of Medicine on August 8th, 2026.
Published on April 10th, 2026.
Key Takeaways
Tendinitis is inflammation of the tendons, the thick cords that connect muscles to bones
Most common in shoulders, elbows, wrists, knees, and heels, especially from repetitive motions
Symptoms include pain, stiffness, and tenderness that worsens with movement
Most cases heal with rest, ice, and gentle exercises within a few weeks
Chronic cases may need physical therapy or other advanced treatments
Overview
Tendinitis refers to pain and irritation in a tendon. Although inflammation may be present, many persistent tendon problems involve changes in the tendon rather than ongoing inflammation. Tendons are tough, rope-like tissues that connect your muscles to your bones. When these tissues get overused or injured, they swell up and cause pain.
This condition affects millions of people each year. It's especially common in athletes, manual workers, and people who do repetitive motions. You might know it by other names like tennis elbow, golfer's elbow, or jumper's knee.
Anyone can get tendinitis, but it becomes more common as we age. The good news is that most cases get better with simple home treatments and rest. Understanding the signs and getting proper care can help you heal faster and prevent it from coming back.
Tendon pain can begin after a sudden increase in strain or develop slowly from doing the same motion over and over. However, sudden severe pain after an injury may indicate a tendon tear and should be assessed promptly. Sometimes you don't even realize you're hurting your tendons until the pain starts. The key is catching it early and treating it right away.
Symptoms & Signs
Tendinitis symptoms usually develop gradually and get worse over time. The pain often starts as a mild ache and can become sharp or burning with continued activity.
Primary Symptoms
Pain and tenderness - Usually worse when moving the affected area or pressing on the tendon
Stiffness - Especially noticeable in the morning or after periods of rest
Swelling - The area around the tendon may look puffy or feel warm to touch
Weakness - Difficulty using the affected muscle or joint normally
When to Seek Care
See a doctor if your pain doesn't improve after a few days of rest. Also get medical help if you have severe pain that stops you from moving normally. Fever along with tendon pain needs immediate attention.
You might notice that the pain gets worse at night or when you first wake up. Some people feel a creaking or popping sensation when they move the injured tendon. The pain usually feels better when you rest but comes back quickly when you move.
When to Seek Immediate Care
Contact a healthcare provider right away if you can't move the joint at all, have severe pain, or notice signs of infection like fever or red streaks.
Causes & Risk Factors
Tendinitis usually happens when you put too much stress on a tendon. This can be from sudden injury or gradual wear and tear. Repeated or excessive strain can disrupt the tendon's normal repair process, leading to pain and changes in the tendon tissue.
Most cases come from repetitive motions at work, sports, or daily activities. Poor technique when exercising or working can also put extra strain on your tendons. Sometimes tendinitis and tenosynovitis occur together when the protective sheath around the tendon also becomes inflamed.
Age
Risk increases after age 40 as tendons become less flexible
Genetics
Genetic differences may contribute to the risk of some tendon problems, but activity, health conditions, medications, and prior injuries can also affect risk.
Lifestyle
Poor posture, sudden activity increases, or repetitive work motions
Other Conditions
Diabetes, arthritis, and thyroid problems raise your risk
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Diagnosis
Medical History & Physical Examination
Your doctor will ask about your symptoms, activities, and when the pain started. They'll want to know what makes it better or worse. The physical exam includes checking for swelling, tenderness, and range of motion.
Your doctor will also test your strength and look at how you move the affected area. They might ask you to repeat certain motions that cause pain. This helps them figure out which tendon is involved and how severe the problem is.
Diagnostic Testing
X-rays - Rule out bone problems or fractures that might cause similar pain
Ultrasound - Shows soft tissue damage and inflammation in the tendon
MRI scan - Provides detailed images of tendon tears or chronic damage
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Treatment Options
Treatment focuses on reducing pain and inflammation while helping the tendon heal. Most people get better with simple treatments at home, but some cases need more intensive care.
Conservative Treatments
Rest and activity modification - Avoid activities that cause pain and gradually return to normal use
Ice therapy - Apply ice packs for 15-20 minutes several times daily to reduce swelling
Pain medication - Over-the-counter options like ibuprofen or acetaminophen for pain relief
Gentle stretching - Simple exercises to maintain flexibility without causing more damage
Supportive braces - Reduce stress on the affected tendon during daily activities
Advanced Treatments
Physical therapy - Specific exercises to strengthen muscles and improve tendon healing
Corticosteroid injections - May provide short-term relief in selected conditions, but benefits and risks vary by tendon. Repeated injections or injections into a tendon can weaken it, so discuss this option with a qualified clinician.
Platelet-rich plasma therapy - Uses a preparation made from your blood, but evidence of benefit varies by tendon condition and it may not help everyone.
Surgery - Reserved for severe cases that don't respond to other treatments
Your doctor might also recommend compression wraps to reduce swelling and support the tendon. Heat therapy can help once the initial swelling goes down. Most doctors recommend waiting at least 48 hours before using heat on a new injury.
Living with the Condition
Daily Management Strategies
Start your day with gentle stretches to keep your tendons flexible. Use proper ergonomics at work and take frequent breaks from repetitive activities. Apply ice after activities that might irritate your tendon. Listen to your body and stop activities that cause pain.
Wear supportive shoes that fit well and provide cushioning for your feet and tendons. Keep your workspace set up so you don't have to strain your arms or wrists. Getting enough sleep helps your body heal faster from inflammation.
Exercise & Movement
Low-impact activity may be possible if it does not stress the affected tendon or worsen symptoms. For example, swimming may aggravate a shoulder tendon problem, while walking may aggravate an Achilles or knee tendon problem. Avoid high-impact sports or activities that involve repetitive motions of the affected area. When you're ready to return to normal activities, start slowly and build up gradually. Always warm up before exercising and cool down afterward.
Talk to a physical therapist about exercises that strengthen the muscles around your injured tendon. These stronger muscles take stress off the tendon and help it heal. Ask your doctor which activities are safe before you return to sports or heavy work.
Prevention
Warm up properly before exercise or physical activities to prepare your tendons
Use correct technique when playing sports or doing repetitive work tasks
Take regular breaks from repetitive motions to give your tendons time to rest
Strengthen supporting muscles to reduce stress on tendons during daily activities
Maintain good posture throughout the day to avoid unnecessary tendon strain
Gradually increase activity levels instead of sudden jumps in intensity or duration
People with conditions like bunions or other foot problems should pay extra attention to proper footwear and walking mechanics.
Stay hydrated and eat a balanced diet to support your overall health while you recover. Maintain a healthy weight to reduce stress on your tendons, especially in your knees and ankles. Stretch regularly but gently, even on days when you're not exercising.
Frequently Asked Questions
Some mild cases improve within a few weeks, but recovery time varies by the tendon involved, how long symptoms have been present, and the severity of the problem. Persistent, chronic, or severe cases may take several months or longer to heal fully. Early treatment usually leads to faster recovery.
Light exercise that doesn't cause pain is usually okay. Avoid activities that stress the affected tendon. Swimming and gentle stretching are often good options while you heal.
Tendinitis can return if you go back to the same activities that caused it. Prevention strategies like proper warm-ups and technique changes help reduce your risk of repeat episodes.
No, tendinitis affects tendons while arthritis conditions affect joints. However, both can cause pain and stiffness, which is why proper diagnosis is important.
See a healthcare provider if pain lasts more than a few days, gets worse despite rest, or if you can't move the affected area normally. Severe pain or signs of infection need immediate attention.
Still have questions?
Consult with a healthcare professional for personalized advice.