Joint Inflammation (Arthritis)
Pain, swelling, and stiffness in one or more joints
Quick Facts
- Type: Musculoskeletal symptom
- Common causes: Wear and tear, autoimmune disease, gout, injury
- Joints affected: Hands, knees, hips, spine, and more
- Seek prompt care: Hot, red, very swollen joint with fever
Overview
Arthritis is not a single disease but a general term for pain, swelling, stiffness, and limited movement in one or more joints. More than a hundred different conditions can cause joint inflammation, ranging from age-related wear and tear to autoimmune diseases and crystal buildup. Because the underlying causes differ so much, so do the best treatments.
Joints become inflamed when the cartilage that cushions them wears down, when the immune system mistakenly attacks the joint lining, or when crystals or infection irritate the joint. The result is the familiar combination of aching, stiffness (especially in the morning or after rest), and sometimes visible swelling and warmth. Identifying which type of arthritis is present is key, because some forms can be slowed or controlled if treated early. To learn more about specific conditions, see arthritis, osteoarthritis, and rheumatoid arthritis.
Common Causes
The main types of arthritis arise from different processes:
- Osteoarthritis: The most common type, from gradual wear of joint cartilage, typically in the knees, hips, hands, and spine.
- Rheumatoid arthritis: An autoimmune disease where the immune system attacks the joint lining, usually affecting joints symmetrically.
- Gout: Uric acid crystals cause sudden, intense attacks, often in the big toe (gout).
- Injury and overuse: Past joint injuries can lead to arthritis years later.
- Other inflammatory and infectious causes: Psoriatic arthritis, lupus-related arthritis, and joint infections.
Age, family history, excess weight, and prior joint damage all raise the risk of developing arthritis.
Associated Symptoms
Arthritis involves the joints but can affect the whole body in inflammatory types:
- Joint pain and joint stiffness, often worse in the morning
- Joint swelling, warmth, or redness
- Reduced range of motion and grip strength
- A grating or grinding sensation in worn joints
- In inflammatory types, fatigue, low-grade fever, or feeling generally unwell
A single joint that becomes suddenly hot, red, and very swollen, especially with fever, may signal a joint infection or gout attack and needs prompt evaluation.
Diagnosis & Evaluation
Finding the type of arthritis guides treatment:
- History and exam: Reviewing which joints are involved, the pattern of stiffness, and other symptoms.
- Blood tests: Markers of inflammation and antibodies help identify rheumatoid arthritis, gout, or lupus.
- Imaging: X-rays, ultrasound, or MRI show cartilage loss, swelling, and joint damage.
- Joint fluid analysis: Removing a small sample of fluid can detect crystals or infection.
A primary care doctor may refer you to a rheumatologist for inflammatory or complex arthritis.
Treatment & Management
Treatment depends on the type but generally aims to ease pain, reduce inflammation, and protect joint function:
- Medications: Pain relievers and anti-inflammatory drugs for symptoms; disease-modifying drugs (DMARDs) or biologics for rheumatoid and other inflammatory arthritis; specific medicines to lower uric acid in gout.
- Exercise and physical therapy: Low-impact activity strengthens muscles, maintains motion, and reduces pain.
- Weight management: Easing the load on weight-bearing joints helps osteoarthritis.
- Heat, cold, and assistive devices: Practical aids for daily comfort and function.
- Surgery: Joint replacement for severe, advanced damage.
Early, consistent treatment of inflammatory arthritis can prevent lasting joint damage.
Self-Care & Prevention
While not all arthritis can be prevented, you can lower your risk and protect your joints:
- Stay active with regular low-impact exercise to keep muscles strong and joints flexible.
- Maintain a healthy weight to reduce stress on weight-bearing joints like the knees and hips.
- Protect your joints from injury during sports and work, and treat injuries properly.
- Eat a balanced, anti-inflammatory diet rich in vegetables, fruits, and healthy fats.
- Avoid smoking, which is linked to a higher risk of rheumatoid arthritis.
For inflammatory arthritis, taking prescribed medications consistently helps prevent flares and lasting joint damage.
When to See a Doctor
See a doctor for joint pain or swelling that lasts more than a couple of weeks, keeps returning, or limits your daily activities. Seek prompt care if you have:
- A joint that is suddenly hot, red, and very swollen, especially with fever (possible infection or gout)
- Severe joint pain after an injury, or inability to use the joint
- Morning stiffness lasting more than an hour with several swollen joints
- Joint symptoms with unexplained weight loss, rash, or feeling very unwell
A hot, swollen joint with fever should be checked urgently, as a joint infection can damage the joint quickly.
Frequently Asked Questions
What is the difference between osteoarthritis and rheumatoid arthritis?
Osteoarthritis is wear-and-tear damage to joint cartilage, usually with age, affecting specific joints. Rheumatoid arthritis is an autoimmune disease in which the immune system attacks the joint lining, often affecting joints symmetrically and causing whole-body symptoms like fatigue.
Can arthritis be cured?
Most forms of arthritis cannot be cured, but they can often be managed well. Treatment relieves pain, reduces inflammation, and protects joint function. Early treatment of inflammatory types like rheumatoid arthritis can prevent or slow lasting joint damage.
What helps arthritis pain at home?
Staying active with low-impact exercise, maintaining a healthy weight, applying heat or cold, and using over-the-counter pain relievers as directed all help. Physical therapy and assistive devices can ease strain on affected joints.
Is a hot, swollen joint an emergency?
It can be. A single joint that becomes suddenly hot, red, and very swollen, especially with fever, may signal a joint infection or acute gout attack. A joint infection can damage the joint quickly, so seek prompt medical care.
Does cold weather make arthritis worse?
Many people with arthritis report more stiffness and discomfort in cold or damp weather, though it does not cause the disease or worsen the underlying joint damage. Keeping warm and active can help ease weather-related stiffness.
References
- Centers for Disease Control and Prevention (CDC). Arthritis.
- Mayo Clinic. Arthritis — Symptoms and causes.
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS).
- MedlinePlus, U.S. National Library of Medicine. Arthritis.