โ "Rheumatism" โ a lay term covering many different joint and muscle conditions
โ All types share: joint pain, stiffness, and reduced movement โ but differ in which joints, the pattern, severity, and associated features
โ Osteoarthritis: gradual, weight-bearing joints (knees, hips), morning stiffness under 30 minutes
โ Rheumatoid arthritis: multiple small joints, prolonged morning stiffness, systemic fatigue
โ Gout: sudden severe attack in single joint (often big toe), intense pain
โ Pseudogout: similar to gout but calcium crystals, often knee
โ Reactive arthritis: follows infection; often joints plus urethritis or eye inflammation
โ Psoriatic arthritis: associated with skin psoriasis
โ Fibromyalgia: widespread pain, fatigue, sleep problems โ not true joint inflammation