Rheumatism or rheumatic disorders are conditions causing chronic, often intermittent pain affecting the joints or connective tissue. Rheumatism does not designate any specific disorder, but covers at least 200 different conditions, including arthritis and "non-articular rheumatism", also known as "regional pain syndrome" or "soft tissue rheumatism". There is a close overlap between the term soft tissue disorder and rheumatism. Sometimes the term "soft tissue rheumatic disorders" is used to describe these conditions.

आमवात या रूमेटीज्म शरीर की वह दशा है जिसमें जोड़ों में लगातार दर्द बना रहता है। आमवात किसी एक रोग का नाम नहीं है बल्कि इसके अन्तर्गत २०० से अधिक स्थितियाँ (लक्षण) समाहित हैं। आजकल इन सभी रोगों को १० मुख्य श्रेणियोँ में बाँटा जाता है जो निम्नलिखित हैं-

• विसरित संयोजी ऊतक रोग
  • रूमेटॉइड संधिशोथ
  • बाल संधिशोथ
  • Systemic lupus erythematosus
  • Sjögren syndrome
  • Scleroderma
  • Polymyositis
  • Dermatomyositis
  • Behçet's disease
  • Relapsing polychondritis
• Arthritis associated with spondylitis
  • Ankylosing spondylitis
  • Reactive arthritis
  • Psoriatic arthritis
• Osteoarthritis
• Rheumatic syndromes associated with infectious agents
• Metabolic and endocrine diseases associated with rheumatic states
  • वातरक्त या गाउट, pseudogout
• अर्बुद (Neoplasms)
• Neurovascular disorders
• Bone and cartilage disorders
• Extraarticular disorders
  • Bursitis/Tendinitis of the shoulder, wrist, biceps, leg, knee cap (patella), ankle, hip, and Achilles tendon
  • Capsulitis
• Miscellaneous disorders associated with articular manifestations
  • Palindromic rheumatism has been theorized to be a form of rheumatoid arthritis.