Relapsing Fever Home>Conditions_and_Diseases>Infectious_Diseases>Spirochetal>Relapsing Fever     Web Pages Tick-borne Diseases, Relapsing Fever Detailed article from eMedicine.com. Relapsing Fever Brief description from the Lyme Disease Foundation. Relapsing Fever Lecture notes from an infectious diseases course. Relapsing Fever Spirochete Switches Surface Proteins When it Changes Hosts News release from the U.S. National Institutes of Health.