Still’s disease is a rare type of inflammatory arthritis. It mainly affects children, occurring once every 100 births. In adults, it is even rarer, affecting fewer than one in every 100,000. When occurring in children, it is also known as systemic-onset juvenile idiopathic arthritis or S-OJIA. In adults, doctors refer to the condition as adult-onset Still’s disease. The differentiation becomes important mostly when dealing with complications and treatment of the disease.
The causes of Still’s disease are unknown at this time. Some clinicians suggest its onset could be related to environmental conditions such as exposure to a viral or bacterial infection. Others believe genetic factors are to blame, such as the presence of an auto-immune disease. Some experts cite hormonal dysfunction as the root. Unfortunately, there is currently no definitive proof that any of these are the cause of Still’s disease in either children or adults.
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