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Understanding Tendinitis: Causes, Symptoms, and Recovery

Discover the causes, symptoms, diagnosis, treatment, and prevention of tendinitis. Learn how to manage tendon pain effectively and support long-term recovery.

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Written by Dr. Shaik Abdul Kalam

Reviewed by Dr. D Bhanu Prakash MBBS, AFIH, Advanced certificate in critical care medicine, Fellowship in critical care medicine

Last updated on 18th Sep, 2025

Introduction

Have you ever experienced a persistent, aching pain in your elbow after a day of intense typing, or a sharp sting in your shoulder after a weekend of painting? That nagging discomfort is often a warning sign from your body—a case of tendinitis. This common condition, characterised by the inflammation or irritation of a tendon, can sideline athletes, inconvenience office workers, and affect anyone who engages in repetitive activities. But what exactly is happening inside your body when tendinitis strikes? More importantly, how can you effectively treat it and prevent it from coming back? This comprehensive guide will demystify tendinitis, exploring everything from its root causes and unmistakable symptoms to evidence-based treatment strategies and preventative measures. We’ll help you understand your body’s signals and map out a clear path to recovery.

What Exactly is Tendinitis?

At its core, tendinitis (also spelt tendonitis) is the inflammation of a tendon. These thick, fibrous cords act as the body's essential cables, anchoring muscles to bones. This connection is what allows your joints to move. When a tendon is overworked or subjected to repetitive stress, tiny micro-tears can develop, triggering an inflammatory response. This inflammation is what causes the classic pain and tenderness associated with the condition.

Tendons: The Body's Essential Cables

Imagine your muscles are powerful motors and your bones are the levers they move. Tendons are the strong, flexible ropes that connect the two. They are made of tough, collagen-based tissue designed to withstand significant tension. However, they have a limited blood supply compared to muscles, which is why they heal more slowly when injured.

Tendinitis vs. Tendinosis: A Critical Difference

This is a key distinction often missed in general discussions. Acute tendinitis is primarily an inflammatory condition. However, if the cause of the inflammation isn't resolved and the tendon continues to be stressed over weeks or months, the problem can evolve into tendinosis. Tendinosis is a degenerative condition characterised by disorganised collagen fibres and microscopic damage within the tendon, with little to no inflammation. Why does this matter? Because treating a degenerative tendinosis with purely anti-inflammatory methods (like ice and NSAIDs) is often less effective. Recovery from tendinosis requires targeted physical therapy to rebuild the tendon's strength. If your tendon pain persists beyond a few weeks, it's likely moving into the tendinosis phase, and you should seek professional advice.

Common Causes and Risk Factors of Tendinitis

Tendinitis doesn't discriminate; it can affect anyone. However, it's most often the result of a perfect storm of factors.

Repetitive Motion and Overuse

This is the number one cause. Any action performed repeatedly can strain the involved tendons. Common examples include:

  • Sports: Swinging a tennis racket (tennis elbow), running (Achilles tendinitis), or jumping (jumper's knee).

  • Jobs: Typing on a keyboard (wrist tendinitis), lifting packages (shoulder tendinitis), or using tools that vibrate.

  • Hobbies: Gardening, knitting, or playing a musical instrument.

Sudden Injury and Age-Related Factors

While repetition is the main culprit, a single, sudden, intense movement can also cause acute tendon inflammation. Furthermore, as we age, our tendons naturally lose elasticity and become less tolerant of stress, making people over 40 more susceptible. Other risk factors include poor posture, improper equipment (e.g., ill-fitting shoes or a poorly set-up workstation), and certain medical conditions like diabetes or rheumatoid arthritis.

Recognising the Symptoms of Tendinitis

Identifying tendinitis early is crucial for a speedy recovery. The symptoms are typically localised to the affected tendon and include:

  • A dull, aching pain, especially when moving the affected limb or joint.

  • Tenderness to the touch.

  • Mild swelling or redness in the area.

  • A feeling of stiffness, particularly in the morning or after periods of inactivity.

  • A sensation of grating or crackling (crepitus) when the tendon moves.

The pain often worsens during or after the activity that aggravates it.

Where Tendinitis Strikes: Most Common Locations

While tendinitis can occur anywhere there is a tendon, it most commonly affects a few specific areas.

Tennis Elbow and Golfer's Elbow

Tennis elbow (lateral epicondylitis) affects the tendons on the outside of the elbow, while golfer's elbow (medial epicondylitis) affects the tendons on the inside. Despite the names, you don't have to play sports to get them.

Rotator Cuff Tendinitis

This involves the tendons surrounding the shoulder joint. It's a common cause of shoulder pain and can make lifting your arm overhead intensely painful.

Achilles Tendinitis

This affects the tendon connecting your calf muscles to your heel bone. It's common among runners and weekend warriors who suddenly increase their activity intensity.

Jumper's Knee and Wrist Tendinitis

Jumper's knee (patellar tendinitis) is an injury to the tendon connecting your kneecap to your shinbone. Wrist tendinitis is often seen in people who perform repetitive manual tasks.

How is Tendinitis Diagnosed?

If you suspect you have tendinitis, a proper diagnosis is the first step toward effective treatment.

The Physical Examination

A doctor will typically begin by discussing your symptoms and medical history. They will then physically examine the area, pressing on the tendon to locate the pain and asking you to move the joint in specific ways to assess range of motion and strength.

Imaging Tests: X-Rays, Ultrasounds, and MRIs

While an X-ray can't show soft tissues like tendons, it can help rule out other conditions like fractures or arthritis. An Ultrasound or MRI is excellent for visualising soft tissue damage, inflammation, and tears within the tendon itself. These are particularly useful for confirming a diagnosis and assessing the severity of the injury. If your condition is severe or doesn't improve, a doctor on Apollo24|7 can guide you on whether these imaging tests are necessary.

Effective Treatment Strategies for Tendinitis

The goal of treatment is to relieve pain, reduce inflammation, and promote healing.

Immediate At-Home Care: The RICE Method

For sudden flare-ups, the RICE principle is the gold standard:

  • Rest: Avoid activities that aggravate the pain.

  • Ice: Apply ice packs for 15-20 minutes every few hours to reduce swelling.

  • Compression: Use an elastic bandage to help minimise swelling.

  • Elevation: Raise the affected area above the level of your heart.

Medical Interventions: Medications and Injections

Over-the-counter nonsteroidal anti-inflammatory drugs (NSAIDs) like ibuprofen can help manage pain and inflammation. For more persistent cases, a doctor may recommend a corticosteroid injection directly into the tendon sheath to provide powerful, short-term relief. However, these are used cautiously as they can weaken tendons over time.

The Role of Physical Therapy and Rehabilitation

This is arguably the most important long-term treatment. A physical therapist can teach you specific eccentric exercises (which involve lengthening a muscle under tension) that are proven to remodel and strengthen damaged tendon tissue. They can also use techniques like ultrasound therapy or manual therapy.

Surgical Options: A Last Resort

Surgery is only considered if several months of conservative treatment have failed. It typically involves removing damaged tissue from the tendon. If your condition does not improve after trying these methods, consulting a specialist to discuss all options, including surgery, is a critical next step.

How Long Does Tendinitis Take to Heal?

This is one of the most common questions. The tendinitis recovery timeline varies greatly.

  • Mild cases may resolve with rest and home care within 2-3 weeks.

  • More persistent cases can take 4-6 weeks or longer to see significant improvement.

  • Chronic tendinosis can take anywhere from 3 to 6 months of consistent rehabilitation to fully heal.

Patience and adherence to your treatment plan are essential.

Preventing Tendinitis: Tips for Long-Term Health

Prevention is always better than cure. Incorporate these habits to keep your tendons healthy:

Proper Technique and Ergonomics

Whether you're lifting weights, swinging a golf club, or sitting at your desk, using the correct form is non-negotiable. Ensure your workspace is ergonomically set up to minimise strain.

Strength Training and Flexibility

Strong, flexible muscles absorb force more effectively, protecting your tendons from excessive load. Incorporate strength training and regular stretching into your routine. Always warm up before activity and cool down afterwards.

Conclusion: Your Path to Recovery

Tendinitis is a common and often frustrating condition, but it is also highly manageable and preventable. By understanding its causes—primarily repetitive overuse—and recognising the symptoms early, you can take proactive steps toward healing. Remember, the journey from tendon inflammation to recovery requires a blend of immediate care, targeted rehabilitation, and long-term preventative strategies. Listen to your body's signals; that nagging pain is a message to slow down and address the issue. If rest and home care aren't enough, don't hesitate to seek professional guidance. With the right approach, you can overcome tendinitis and return to the activities you love, stronger and smarter than before.

Ready to get personalised advice? If symptoms persist, consult a doctor online with Apollo24|7 for a professional evaluation and a tailored recovery plan.

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Frequently Asked Questions

Can I still exercise with tendinitis?

Yes, but you must modify your activities. Avoid exercises that directly aggravate the painful tendon. Focus on 'active rest' by working other parts of your body. Low-impact exercises like swimming or cycling can often be done without pain.

Is heat or ice better for treating tendon pain?

Use ice for acute pain (first 48-72 hours) or after activity to reduce inflammation. Use heat for chronic stiffness (e.g., morning stiffness) to relax the muscle and improve blood flow to the area before gentle stretching.

What are the best eccentric exercises for Achilles tendinitis?

A classic exercise is the heel drop. Stand on a step on the balls of your feet. Raise up onto both toes, then shift your weight to the injured leg and slowly lower your heel down below the step level. Use your good leg to help raise back up. Repeat.

How can I prevent wrist tendinitis from typing?

Ensure ergonomic setup: keep your wrists straight, elbows at a 90-degree angle, and use a wrist rest. Take frequent breaks to stretch your wrists and fingers. Consider voice-to-text software for long documents.

When should I definitely see a doctor for tendon pain?

Consult a doctor if the pain is severe, doesn't improve with rest after a week or two, is accompanied by significant swelling or redness, or if you are unable to move the joint or bear weight on it.