1 Departments of Neurology (R.H., S.F., A.K., R.S., R.G., A.C.), Dermatology (P.A.), and Radiology (B.B., C.L.), St. Josef Hospital Bochum, Ruhr University, Germany; and Department of Neuropathology (I.M.), University Medical Center, Georg August University, Göttingen, Germany.