Once called Nantucket fever, this nasty tick-borne illness is on the rise Allison Aubrey, June 10, 2024 Blacklegged Tick or Deer Tick (adult female). Photo: Griffin Dill. Micheline LeBlanc knew something was up in the summer of 2022. She felt achy and fatigued. “Headaches were a big problem. Night sweats were read more National Public Radio: Once called Nantucket fever, this nasty tick-borne illness is on the rise