A 7-year-old girl complains of pain and swelling of the leftwrist and right knee off and on for the past 3 months. Shehas been previously healthy. The pain is worse in themorning and improves throughout the day. Physicalexamination is remarkable for swelling and effusion of theright knee, with decreased range of motion.Which of the following is the most probable diagnosis?a) Septic arthritisb) Polyarticular Juvenile Idiopathic Arthritisc) Systemic onset Juvenile Idiopathic Arthritisd) Systemic lupus erythematosuse) Pauciarticular Juvenile Idiopathic Arthritis
Question
A 7-year-old girl complains of pain and swelling of the leftwrist and right knee off and on for the past 3 months. Shehas been previously healthy. The pain is worse in themorning and improves throughout the day. Physicalexamination is remarkable for swelling and effusion of theright knee, with decreased range of motion.Which of the following is the most probable diagnosis?a) Septic arthritisb) Polyarticular Juvenile Idiopathic Arthritisc) Systemic onset Juvenile Idiopathic Arthritisd) Systemic lupus erythematosuse) Pauciarticular Juvenile Idiopathic Arthritis
Solution
The most probable diagnosis for the 7-year-old girl based on the symptoms provided is b) Polyarticular Juvenile Idiopathic Arthritis. This condition is characterized by inflammation in five or more joints within the first six months of the disease and is more common in girls than boys. The symptoms described, including pain and swelling in more than one joint, worsening symptoms in the morning, and improvement throughout the day, are typical of this condition. Additionally, the physical examination findings of swelling, effusion, and decreased range of motion in the right knee are consistent with this diagnosis.
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