What are the causes of monoarthritis?

Causes of monoarthritis (single joint inflammation)

A. Common causes:

• Gout
• Pseudogout
• Trauma
• Haemarthrosis
• Spondyloarthritis
• Psoriatic arthritis
• Reactive arthritis
• Enteropathic arthritis

B. Less common Causes

• Rheumatoid arthritis
• Juvenile idiopathic arthritis
• Pigmented villonodular synovitis
• Foreign body reaction
• Tuberculosis
• Leukaemia & Osteomyelitis (ln children, both of the conditions may present with monoarthritis)
• Gonococcal infection

[Source: Davidson's principles and practice of medicine 23rd Edition; page 993 ]