Suggest Remedies For Persistent High Fever

My husband was just discharged from our local hospital. He went in because of a high fever for 4 days the fever would spike up to 104 degrees at night. The hospital did test: cat scan, spinal tap, blood test, chest X-rays, they are waiting on rocky mountain spotted fever test to come back. They ruled out many things, and just told us it was a virus that they have never seen. Now it looks as if he is having circulation problems in his legs and feet. His leg and feet feel cooler then the rest of his body and are a purplish color some of the time. He has always been active and healthy. Thank You