Methylphenidate and continuous spike and wave during sleep in a child with attention deficit hyperactivity disorder

Area of Science:

• Pediatric Neurology
• Neurodevelopmental Disorders
• Epileptology

Background:

• Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder in children, often co-occurring with epilepsy.
• Methylphenidate is a primary treatment for ADHD-related behavioral issues, with generally accepted safety in children with well-controlled epilepsy or EEG abnormalities without seizures.
• Contradictory findings exist regarding methylphenidate's safety in patients with active seizures.

Observation:

• A case report details a young girl with ADHD and behavioral problems, treated with valproic acid, who presented with an abnormal EEG showing left centroparietal spikes but no prior electrographic seizures.
• The patient experienced a convulsion on the day following her initial dose of methylphenidate.
• A subsequent EEG revealed continuous spike-and-wave during sleep (CSWS).

Findings:

• This case suggests a potential increased risk of seizures in children with CSWS when treated with methylphenidate.
• The findings highlight the need for careful consideration of methylphenidate use in ADHD patients with specific EEG patterns.

Implications:

• Clinicians should exercise caution when prescribing methylphenidate to children with ADHD and EEG evidence of CSWS.
• Further research is warranted to elucidate the relationship between methylphenidate, CSWS, and seizure risk in pediatric populations.
• This case underscores the importance of individualized treatment approaches in managing co-occurring ADHD and epilepsy.