P Immovilli1, N Morelli2, E Rota3, D Guidetti2. 1. Neurology Unit, Emergency Department, Guglielmo da Saliceto Hospital, Piacenza, Italy. Electronic address: paolo.immovilli.md@gmail.com. 2. Neurology Unit, Emergency Department, Guglielmo da Saliceto Hospital, Piacenza, Italy. 3. Neurology Unit, ASL Alessandria, Italy.