Objective: To prospectively assess the prevalence of spinal CSF leaks in patients with cSDH Methods: This is a prospective observational, monocentric study on patients admitted due to cSDH to the Department of Neurosurgery at the Medical Center of the University of Freiburg. Treatment and diagnostic procedures will follow standard protocols. The number of spinal CSF leaks will be assessed to generate the prevalence of spinal CSF leaks in this patient cohort. Furthermore, clinical data, the specific type of the CSF leak, and imaging parameters are assessed systematically to estimate the diagnostic value of these measures. conditions: Chronic Subdural Hematoma studyType: OBSERVATIONAL observationalModel: COHORT timePerspective: PROSPECTIVE count: 220 type: ESTIMATED measure: evidence of a spinal CSF leak (yes/no) measure: Number of identified CSF leak types: measure: Number of diagnostic procedures performed: measure: Number, and site of interventions needed for cSDH: measure: Color of hematoma evacuated: measure: Age measure: body height measure: body weight measure: Body mass index (BMI) measure: sex measure: Karnofsky Index measure: Anti-platelet therapy intake measure: Anticoagulation intake measure: Blood pressure medication intake measure: Lipid regulation medication intake measure: Hormonal regulation medication intake measure: Immunotherapeutic medication intake measure: other medication intake measure: history of trauma measure: national institutes of health stroke scale (NIHSS) measure: gait disorder measure: Modified Rankin Scale (mRS) measure: Headache-Impact-Test (HIT)-6 measure: current working capacity, measure: complaints measure: headache severity measure: Days within the last month measure: maximum duration being continuously upright measure: severeness of dizziness measure: Severeness of shoulder- and neck pain measure: severeness of nausea measure: severeness of hearing disturbances and tinnitus measure: severeness of cognitive deficits measure: severeness of visual disturbances measure: exhaustion measure: ability to focus and concentrate measure: Patient's Global Impression of Change (PGIC) measure: Self-Administered Comorbidity Questionnaire (SCQ) measure: 5 dimension / 5 levels European Quality of life questionnaire (EQ-5D-5L) Index measure: 5 dimension / 5 levels European Quality of life questionnaire (EQ-5D-5L) visual analogue scale measure: Hematocrit measure: Size of the chronic subdural hematoma measure: Volumetry of the cranial compartments measure: Bern-Score according to Dobrocky et al measure: Spinal longitudinal extradural fluid collection (SLEC) measure: DiverTICula (TIC) sex: ALL minimumAge: 18 Years stdAges: ADULT stdAges: OLDER_ADULT facility: University of Freiburg city: Freiburg state: Baden-Württemberg zip: 79106 country: Germany name: Katharina Wolf, Dr. role: CONTACT phone: +4076127093556 email: katharina.wolf@uniklinik-freiburg.de name: Jürgen Beck, Prof. role: PRINCIPAL_INVESTIGATOR name: Amir El Rahal, Dr. role: SUB_INVESTIGATOR name: Niklas Lützen, Dr. role: SUB_INVESTIGATOR name: Horst Urbach, Prof. role: SUB_INVESTIGATOR name: Mukesch J Shah, Dr. role: SUB_INVESTIGATOR name: Christian Taschner, Prof. role: SUB_INVESTIGATOR name: Marco Reisert, Dr. role: SUB_INVESTIGATOR name: Manou Overstijns role: SUB_INVESTIGATOR name: Katharina Wolf, Dr. role: SUB_INVESTIGATOR name: Florian Volz, Dr. role: SUB_INVESTIGATOR lat: 47.9959 lon: 7.85222 hasResults: False