WAlcohol withdrawal syndrome
WAlexander disease
WAngelman syndrome
WArgininemia
WBenzodiazepine withdrawal syndrome
WBrain abscess
WBrain tumor
WCerebral palsy
WCongenital syphilis
WConversion disorder
WDegos disease
WEncephalocele
WEpilepsy
WFibrillary astrocytoma
WFungal meningitis
WHippocampal sclerosis
WHomocystinuria
WHuntington's disease
WHydrocephalus
WHyperglycemia
WHyperprolinemia
WHypoglycemia
WLaron syndromeWLennox–Gastaut syndrome
WLupus
WMECP2 duplication syndrome
WMeningitis
WMicrocephaly
WNeurosyphilis
WPhenylketonuria
WPilocytic astrocytoma
WPitt–Hopkins syndrome
WPleomorphic xanthoastrocytoma
WRasmussen's encephalitis
WRett syndrome
WSubarachnoid hemorrhage
WTetrahydrobiopterin deficiency
WToxoplasmosis
WTraumatic brain injury
WTuberous sclerosis
WWhooping cough