- Febrile illness of unknown etiology
- F and other sx are persistent, sub-acute
- Evaluation of fever does not reveal other etiology
- Also arhtritis & arthralgias of larger joints
- Salmon colored, maculo-pap non-puritic skin erruption
- Chest pain or SOB from pericarditis/pleuritis
- Eruption is light salmon colored mac/pap
- Inflammatory arthritis