Attention-deficit hyperactivity disorder (ADHD) as a pyridoxine-dependent condition: urinary diagnostic biomarkers.

The data obtained in children with different forms of epilepsy allowed us to consider epilepsy as an inborn error of pyridoxine (vitamin B6) metabolism (Dolina et al., 2012). Mutual interconnections between ADHD and epilepsy indicate that such an approach is reasonable for ADHD.