Dysautonomia, FamilialMuscle RigidityPrimary DysautonomiasAutonomic Nervous System DiseasesNeuroleptic Malignant SyndromeMasseter MuscleSuccinylcholineMalignant HyperthermiaSyndromeAlfentanilMental Status ScheduleFentanylPhysical Conditioning, HumanKinetinHypotension, OrthostaticHalothaneMusclesConsciousness DisordersTilt-Table TestPure Autonomic FailureCentral Cord SyndromeSweat GlandsAutonomic Nervous SystemSweatingMuscle ProteinsValsalva ManeuverMuscle, SkeletalMuscle, SmoothStuporMuscle Fibers, SkeletalMuscle, Smooth, Vascular