2021-12-302021-12-302010-02-10Özdemir, Ö. vd. (2010). "Involuntary movements during vitamin B12 treatment". Journal of Child Neurology, 25(2), 227-230.0883-07381708-8283https://doi.org/10.1177/0883073809333528https://pubmed.ncbi.nlm.nih.gov/19525493/http://hdl.handle.net/11452/23769It has been known for many years that vitamin B12 deficiency can cause neurologic problems. One of these problems is involuntary movements that can appear both before and after the initiation of vitamin B12 treatment. Here, we report 3 infants who developed movement disorder during vitamin B12 administration. The movement disorder consisted of a combination of tremor and myoclonus affecting face, tongue, and limbs. Because of the severity of the symptoms, they all needed symptomatic treatment. In 2 of them, the involuntary movements resolved with clonazepam. The involuntary movements in the other patient were successfully treated with piracetam.eninfo:eu-repo/semantics/closedAccessVitamin B12 deficiencyInvoluntary movementsTreatmentDeficiencyPiracetamMyoclonusInfantDietNeurosciences & neurologyPediatricsAnticonvulsantsClonazepamDyskinesia, drug-inducedFemaleHumansInfantMalePiracetamSeverity of illness indexTreatment outcomeVitamin B 12Article0002739893000122-s2.0-7604910130722723025219525493Clinical neurologyPediatricsVitamin B 12 Deficiency; Cyanocobalamin; HomocystineClonazepamCyanocobalaminFerritinFolic acidPiracetamPropranololAgitationApathyArticleBrain atrophyCase reportChildCyanocobalamin deficiencyDisease severityDrug substitutionDrug withdrawalFaceFeeding disorderFemaleFerritin blood levelFolic acid blood levelHand tremorHead circumferenceHumanInvoluntary movementLaboratory testLethargyLimb movementLimb tremorMaleMaternal nutritionMegaloblastic anemiaMotherMuscle hypotoniaMyoclonusNeurologic examinationNuclear magnetic resonance imagingPancytopeniaPhysical examinationPreschool childPriority journalRestlessnessSide effectSittingSocial interactionSymptomTendon reflexTongueTremorVegetarian diet