The medical records of 89 children followed at a multidisciplinary Men
ingomyelocele Clinic at the Children's Clinics for Rehabilitative Serv
ices were reviewed, Almost all children in southern Arizona with menin
gomyelocele are followed at this clinic, Eight children (foreign natio
nals) were excluded because they were not eligible for neurosurgery/ne
urology services at the clinic, The remaining 81 children have been fo
llowed at the clinic from 0.25 to 21 years, Seventeen children (21%; a
ge: 1.3-17 years, mean: 9.1 +/- 4.4 years; follow-up: 1.3-16 years) ma
nifested seizures at some time during their course, All children with
seizures had shunted hydrocephalus. Neonatal seizures occurred in 2 ch
ildren currently not receiving medication. An additional 3 children ha
d an acute symptomatic seizure associated with an intraventricular)hem
orrhage during ventriculoperitoneal shunt revision, 2 of whom later de
veloped epilepsy, Fourteen children (17.3%) had epilepsy; 12 were taki
ng antiepileptic drugs. Seizures were controlled on medication in 5 ch
ildren, EEG abnormalities were present in 12 children (focal slowing 4
, focal spikes 8, diffuse slowing 3, generalized or bilaterally synchr
onous spike-wave 4), Most of these children (12/14) had evidence of ad
ditional central nervous system (CNS) pathology (i,e,, areas of enceph
alomalacia or past stroke 7, cerebral malformations 2, CNS calcificati
ons 1, and frequent apneic spells/cardiac arrest 2), We conclude that
epilepsy occurs in approximately 17% of children with meningomyelocele
, and most have other CNS pathology to account for their seizures.