Arthritis
Arthritis is a general term describing inflammation or swelling of one or more joints. It encompasses over 100 different conditions that affect the joints, tissues surrounding the joint, and other connective tissues. The most common forms are osteoarthritis and rheumatoid arthritis.
Overview
Arthritis is a general term describing inflammation or swelling of one or more joints. It encompasses over 100 different conditions that affect the joints, tissues surrounding the joint, and other connective tissues. The most common forms are osteoarthritis and rheumatoid arthritis.
Symptoms typically involve pain, stiffness, and a decreased range of motion in the affected areas. These symptoms often develop gradually over time but can also appear suddenly. While it is more common in older adults, arthritis can affect people of all ages, including children.
Understand this condition
Arthritis occurs when the protective cartilage that cushions the ends of bones wears down or when the immune system attacks the joint lining. This leads to friction between bones or chronic inflammation, resulting in pain and structural changes. Over time, the joint can lose its natural shape and ability to move smoothly.
Why it happens
Mechanical stress, inflammation, and aging cause the joint tissues to break down faster than they can repair. In some cases, triggers like injury or infection kickstart a cycle of chronic swelling. As the condition progresses, the space between bones narrows and may lead to bone-on-bone contact.
Real-world scenarios
- •This often appears as stiff fingers that are hard to move each morning.
- •People may notice a grinding sensation when walking or climbing stairs.
- •This often appears as a sudden, hot, painful swelling in the big toe.
- •People may notice their joints look larger or knobby over many years.
Common vs serious explanations
- •Muscle strain from recent physical overexertion
- •Normal age-related stiffness after waking up or sitting long periods
- •Temporary soreness due to changes in weather or humidity
- •Minor tendonitis from repetitive movements at work or home
- Septic arthritis, which is a dangerous infection inside the joint
- Lyme disease resulting from a tick bite infection
- Systemic lupus erythematosus affecting multiple internal organs and joints
- Bone fractures or serious ligament tears requiring surgical repair
Symptoms
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Causes
- •Wear and tear of joint cartilage over time
- •Autoimmune disorders causing the immune system to attack joints
- •Uric acid crystal buildup in the joint space
- •Joint injuries or repetitive stress from physical activity
- •Bacterial or viral infections within the joint
- •Genetic predisposition to joint degradation
Risk factors
- •Increasing age as joints experience more wear
- •Family history or genetic predisposition to joint issues
- •Previous joint injuries from sports or accidents
- •Obesity, which puts extra stress on weight-bearing joints
- •Autoimmune conditions that may affect connective tissue
- •Biological sex, as some types are more common in women
How it progresses
3 stages- OnsetSymptoms appear, often triggered by a known cause.Often missed
- Active phaseSymptoms peak; self-care or short treatment usually helps.
- ResolutionSymptoms ease over days to weeks with proper care.
How it's diagnosed
- •Clinical evaluation by a healthcare professional
- •Review of medical history and symptoms
- •Targeted physical examination
- •Laboratory or imaging tests when indicated
Treatment options
General educational information only — no dosage advice. Always follow guidance from a qualified clinician.
- •Nonsteroidal anti-inflammatory drugs to reduce pain and swelling
- •Physical therapy to strengthen muscles and improve mobility
- •Low-impact exercise programs tailored to joint health
- •Weight management to reduce pressure on the knees and hips
- •Corticosteroid injections for temporary relief of severe inflammation
- •Disease-modifying antirheumatic drugs for autoimmune cases
- •Joint replacement surgery for severely damaged joints
- •Assistive devices like braces, splints, or walkers
Complications
- •Reduced quality of life
- •Worsening symptoms over time
- •Recurrence of arthritis
Prevention
- •Maintain a healthy lifestyle
- •See a clinician for routine check-ups
When to seek help
- •Symptoms persist beyond a few days
- •Symptoms interfere with daily activities
- •New or worsening symptoms appear
- •Concerning changes related to arthritis
- Sudden inability to move the affected joint
- Fever and chills accompanying joint pain and swelling
- Severe, unbearable pain that prevents all movement
- Joint skin that is hot, red, and extremely tender
- Rapid swelling that occurs after a traumatic injury
In any emergency, call your local emergency number or go to the nearest emergency department.
Real-world questions
- ›Can Arthritis cause headaches?
- ›Is Arthritis reversible?
- ›How quickly does Arthritis progress?
- ›Is Arthritis hereditary?
- ›Can Arthritis be prevented?
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Frequently asked questions
Possible causes of Arthritis include Wear and tear of joint cartilage over time, Autoimmune disorders causing the immune system to attack joints, Uric acid crystal buildup in the joint space, Joint injuries or repetitive stress from physical activity.
Arthritis is generally moderate, but severity can vary. Seek care if symptoms are severe or persistent.
Duration varies between individuals. Many cases improve with appropriate care, while others may persist longer and require ongoing management.
Some milder cases may improve with rest and self-care. If symptoms persist or worsen, consult a healthcare professional.
Consider seeing a clinician if symptoms are severe, persistent, worsening, or if you have any concerns related to general.
Sources
Information based on general medical references such as:
Last reviewed: May 2026