A Case of Fever of Unknown Origin.

C A S E A 12-month-old previously healthy girl was admitted after having 8 days of intermittent fever and rash; she also developed bilateral hand swelling the day of admission. Her rash consisted of erythematous macules over her arms, torso, back, and face. She had no evidence of conjunctival injection, lymphadenopathy, or mucositis. On admission, she was febrile at 39.1°C, her white blood cell (WBC) count was 34 400/mm, platelet count (PLT) 703 000/ mm, and C-reactive protein (CRP) was .15 mg/dL. Her albumin was 3.1 g/dL. It was also noted that she had normocytic, normochromic anemia.