Inclusion Criteria:  Patients presenting at the Emergency Department of the University Hospital Center of Poitiers for the following symptoms, which last since more then 24 hours et less then 4 days : sensitive or motor deficit of one or several limbs facial paralysis impairment of speech dysarthria vertigo impairment of vision oculomotor disorder diplopia free patient, without guardianship or curatorship, or subordination patient not objecting to research  Exclusion Criteria:  head trauma that occured less then 15 days ago known cerebral mass or melanoma refusal to participate in research patient benefiting from enhanced protection, namely: minors, persons deprived of their liberty by a judicial or administrative decision, adults under legal protection pregnant and/or breastfeeding women