A 28 year old male presented with high grade fever with jaundice with severe pancytopenia, positive for Leptospira serology, deterorating further even after i/v antibiotic therapy. Later bone marrow was suggestive of HPS with high level of serum ferritin and triglyceride. He was started with pulse dose of i/v solumedrol (methyleprednisolone), and there was dramatic response with disappearance of fever and improvement of blood parameters.