Joint Pain & Inflammation
Joint pain and inflammation range from mechanical wear (osteoarthritis) to inflammatory autoimmune conditions (rheumatoid arthritis), evaluated per current JAMA clinical review guidance.
Symptoms
Pain, stiffness, swelling, or warmth in one or more joints; morning stiffness lasting more than 30-60 minutes and symmetric joint involvement point toward an inflammatory cause rather than mechanical wear.
Causes and risk
Osteoarthritis stems from mechanical wear and is linked to age, obesity, and prior joint injury; inflammatory arthritis (rheumatoid arthritis, psoriatic arthritis, gout) stems from immune or metabolic processes, per current diagnostic clue research.
How it is evaluated
Distinguishing inflammatory from mechanical joint pain guides testing -- inflammatory markers and specific antibody panels for suspected autoimmune arthritis, versus imaging for suspected osteoarthritis.
Treatment
Exercise and weight management are core to managing osteoarthritis; topical NSAIDs are often first-line for localized pain. Inflammatory arthritis requires disease-modifying therapy (DMARDs) rather than symptom management alone -- functional or nutritional approaches are adjunctive and do not replace these medications when autoimmune disease is present.
When to seek care
A single hot, swollen, severely painful joint -- especially with fever -- can signal a septic (infected) joint, a medical emergency that can destroy the joint within 24-48 hours if untreated, per AAFP guidance. Notably, infection can present without a high fever in older or immunocompromised patients, so this diagnosis should not be dismissed based on temperature alone.