Preceding Infection
Urethritis: generally caused by Chlamydia or Ureaplasma
Enteritis: generally caused by Salmonella or Shigella
Respiratory tract infections, both bacterial and viral (case reports have been written about COVID-19 associated<unk> 
Preceding infection may be clinically silent
Musculoskeletal symptoms
Arthritis: oligoarthritis, usually in the lower extremities
Enthesitis (pain at insertion sites)
Dactylitis (sausage digits)
Low back pain
Extra-articular symptoms
Conjunctivitis (less frequently uveitis, keratitis)
GU symptoms
Oral lesions
Cutaneous and nail changes
Keratoderma blennorrhagicum
Develops in 15% of patients
Found on palm/soles. Vesicles/pustules with yellow/brown color. Appears similar to pustular psoriasis
Urethritis: generally caused by Chlamydia or Ureaplasma
Enteritis: generally caused by Salmonella or Shigella
Respiratory tract infections, both bacterial and viral (case reports have been written about COVID-19 associated<unk> 
Preceding infection may be clinically silent
Arthritis: oligoarthritis, usually in the lower extremities
Enthesitis (pain at insertion sites)
Dactylitis (sausage digits)
Low back pain
Conjunctivitis (less frequently uveitis, keratitis)
GU symptoms
Oral lesions
Cutaneous and nail changes
Develops in 15% of patients
Found on palm/soles. Vesicles/pustules with yellow/brown color. Appears similar to pustular psoriasis
Reactive arthritis
Acute osteoarthritis
Rheumatoid arthritis
Avascular necrosis
Juvenile idiopathic arthritis
Crystal-induced 
Reactive poststreptococcal arthritis
Gonococcal arthritis, arthritis-dermatitis syndrome