<unk>  is most often caused by an auto-immune disorder such as rheumatoid arthritis, amyloidosis, psoriatic arthritis, and lupus erythematosus but can also be caused by infection with an alphavirus such as chikungunya virus and Ross River virus. This condition is termed alphavirus<unk>  syndrome. Sindbis virus, which is endemic in Northern Europe, Africa, the Middle East, and Australia, is the most widely distributed of the alphaviruses causing<unk> , though infection is usually mild or asymptomatic.
Polyarthritis
Monoarthritis
Arthralgia
Arthritis
Myositis
Road rash
Serositis
Myalgia