Psychiatric comorbidity is common in dystonia and other movement disorders.

Objective: To determine rates of psychiatric comorbidity in a clinical sample of childhood movement disorders (MDs).

Design: Cohort study.

Setting: Tertiary children's hospital MD clinics in Sydney, Australia and London, UK.

Intraoperative electrophysiology during single-level selective dorsal rhizotomy: technique, stimulation threshold, and response data in a series of 145 patients.

Objective: Selective dorsal rhizotomy (SDR) is effective at permanently reducing spasticity in children with spastic cerebral palsy. The value of intraoperative neurophysiological monitoring in this procedure remains controversial, and its robustness has been questioned. This study describes the authors' institutional electrophysiological technique (based on the technique of Park et al.

Pediatric Herpes Simplex Virus Encephalitis Complicated by N-Methyl-D-aspartate Receptor Antibody Encephalitis.

N-methyl-D-aspartate receptor antibodies (NMDAR-Abs) can contribute to neurological relapse after herpes simplex virus encephalitis (HSE). We describe a child with NMDAR-Ab encephalitis after HSE, which was recognized and treated early. We discuss the case in the context of existing reports, and we propose a modified immunotherapy strategy to minimize risk of viral reactivation.