Triggers And Risk Factors to Develop a Reversible Cerebral Vasoconstriction Syndrome

University Hospital, Montpellier225 enrolled

Overview

This study will be the first to evaluate the role played by potential precipitating factors and risk factors in Reversible Cerebral Vasoconstriction Syndrome (RCVS) through of prospective selection of carefully characterised patients and controls. The impact of these factors on the prognosis will be evaluated through a follow-up assessment of patients. Our study will include the formation of a clinicoradiological database and a biobank (plasma, cerebro-spinal fluid, DNA) which will be the tools of a future large multicentre study on RCVS.

Introduction : Reversible Cerebral Vasoconstriction Syndrome (RCVS) combines headaches and segmental constriction of cerebral arteries that resolves within 3 months. It is the most recurrent reason of cerebral arteriopathy in people under 70 and of thunderclap headache in absence of aneurysmal subarachnoid haemorrhage. Objectives : * Principal: identify RCVS's precipitating factors * Secondary: 1. Determine if migraine, anxiety, depression are risk factors of RCVS. 2. Determine the role of precipitating factors and risk factors on the RCVS's prognosis in short, medium and long term. 3. Start a formation of a large clinicoradiological database and a biobank (plasma, cerebro-spinal fluid, DNA). Methodology : Monocentric analytic observational 'Case - Control' study with prospective inclusion of cases in a follow-up cohort. This type of study is nevertheless considered interventional because we are collecting additional blood and CSF samples to constitute a biobank.

Study Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

NONE

Enrollment

225

Conditions

Eligibility

Sex: ALLMin age: 18 YearsMax age: 100 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion criteria: * For the Patients * Men and women of 18 and more years old * Taken care in the CHU of Montpellier * Diagnosis of SVCR or SVCR without visible vasoconstriction makes in 14 days preceding the inclusion * According to the consensual criteria of diagnosis and those of the international classification of the headaches ICHD-3 * Informed consent and writes for the participation in the study * For volunteers * Men and women of 18 and more, mated in the Cases on the sex and the age * Patients with an acute pathology not Neurological and not vascular (for example, eye foreign body) OR Healthy Subjects * Informed written consent and for the participation in the study Exclusion criteria: * Coma, insanity, language barrier or severe aphasia preventing from answering the questions * Follow-up considered impossible for 3 months (e.g.: priority associated pathology in the care, the transfer(transformation)) * People placed under legal protection * Refusal to participate in the study

Outcomes

Primary Outcomes

Presence of, at least, one assumed trigger or risk factors

The relationship between the assumed precipitating factors and RCVS will be evaluated by comparing the frequencies of exposure of suspected precipitating factors between cases and controls, and given by calculating an odds ratio. The assumed trigger or risk factors are : a physical and / or emotional stress within 30 days before the clinical beginning; presence of chronic neurological or psychiatric disease (migraine, primary thunderclap headache or circumstancial headache, anxiety or depression); vascular risk factors; and hormonal status in women.

Time frame: 3 months