Amino Acid Metabolism, Inborn Errors/psychology; Developmental Disabilities/psychology; Hallucinations/genetics; Psychotic Disorders/genetics; Succinate-Semialdehyde Dehydrogenase/deficiency; Adolescent; Age of Onset; Aggression; Amino Acid Metabolism, Inborn Errors/epidemiology; Amino Acid Metabolism, Inborn Errors/genetics; Amino Acid Metabolism, Inborn Errors/therapy; Anticonvulsants/therapeutic use; Anxiety Disorders/genetics; Child; Contraindications, Drug; Developmental Disabilities/epidemiology; Developmental Disabilities/genetics; Developmental Disabilities/therapy; Electroencephalography; Epilepsy/genetics; Humans; Neuroimaging; Phenotype; Psychotropic Drugs/therapeutic use; Sleep Disorders, Intrinsic/genetics; Succinate-Semialdehyde Dehydrogenase/antagonists & inhibitors; Succinate-Semialdehyde Dehydrogenase/genetics; Symptom Assessment; Valproic Acid/adverse effects; Valproic Acid/pharmacology; gamma-Aminobutyric Acid/metabolism