Still’s Disease Awareness Day is observed worldwide every September 7 to honor those impacted by Still’s disease, a rare systemic autoinflammatory condition that affects the joints, skin, and other organs. The day was launched by the International Still’s Disease Foundation (ISDF) in 2015, and after its dissolution in 2017, AiArthritis became the official host. Still’s disease is characterized by high fevers, joint pain, and a distinctive salmon-colored rash, with two main forms: systemic juvenile idiopathic arthritis (SJIA) and adult-onset Still’s disease (AOSD). Symptoms can include fatigue, muscle pain, and swollen lymph nodes, and treatment typically involves anti-inflammatory medications tailored to the severity of the disease. The observance aims to increase understanding of this condition and support those affected.