A Case Report of Topiramate for Severe Breath Holding Spells in a Teenage Boy with Pitt-Hopkins Syndrome.

Pitt-Hopkins syndrome is a rare genetic neurodevelopmental disorder characterized by intellectual disability, delayed motor development, and absent speech. Patients often show symptoms of respiratory dysrhythmia, including episodes of hyperpnea followed by apnea with cyanosis. These spells occur while awake and do not have ictal correlate on electroencephalogram (EEG). The episodes can become quite frequent and can be challenging to treat. We present a case of a teenage patient with Pitt-Hopkins syndrome who had very frequent apneic spells that responded well to treatment with topiramate after limited response to acetazolamide.