Nine months after the onset of her illness, after corticosteroids had failed to produce improvement, the patient was given a dose of infliximab. Within 2 days, the woman's muscle strength increased, and within 1 week, her diarrhea improved; the lung nodules went away completely. However, after the third dose of infliximab, abnormal blood clots formed. Although it was unclear whether infliximab contributed to this complication, the therapy was discontinued. Soon afterward, soft bowel movements returned. The patient then received another drug (thalidomide) that relieved her symptoms.