Serum Vitamin D Level in Children with Attention Deficit Hyperactivity Disorder (ADHD).

The article focuses on three medical research topics related to neurological and psychiatric conditions. First, it examines the use of cathodal transcranial direct current stimulation (tDCS) as a potential treatment for patients with recent middle cerebral artery strokes, noting no significant demographic differences between treatment groups. Second, it reports on the prevalence of personality disorders (PD) among students at Ain Shams University, finding a 10.4% rate with obsessive-compulsive personality disorder being the most common, and no significant difference between medical and literature students. Third, it presents a case-control study showing that children with attention-deficit/hyperactivity disorder (ADHD) have significantly lower serum 25-hydroxyvitamin D levels and vitamin D intake compared to healthy controls, suggesting vitamin D level as an independent predictor of ADHD susceptibility.