inborn vitamin metabolic disorder metabolic epilepsy cerebral folate deficiency 2018-06-23T19:01:19Z https://www.epilepsydiagnosis.org/aetiology/metabolic-groupoverview.html#cerebral Cerebral folate deficiency is defined as a neurological syndrome associated with low CSF 5-methyltetrahydrofolate (5MTHF), the active folate metabolite, in the presence of normal folate metabolism outside the nervous system. Cerebral folate deficiency can result from either disturbed folate transport or from increased folate turnover within the central nervous system. GARD:0026019 MEDGEN:893131 UMLS:C4022901 MONDO:0100034 icd11.foundation:1137222547