Although gout is the most common cause of a rapid onset of joint, bursal or periarticular inflammation, other crystal-induced disorders can produce the same clinical features.
A sudden onset of joint pain and swelling prompts consideration of gout as the underlying cause. Other disorders can present in a similar fashion and these alternate diagnoses are the focus of this article. In each of the scenarios described below, crystal-induced arthritis was a possible explanation. Awareness of the potential diagnostic traps and appropriate investigations should enable these disorders to be diagnosed correctly and thus effective treatment to be used.