A clinical and electroencephalographic study on 171 children with febrile convulsions was reported. The patients were divided into two groups, i.e. “simple” and “complicated”. About 60% of the cases were male. The initial episodes of convulsions were seen mostly in between 1 and 3 years of age. The family history of febrile convulsion was noted in 33% of the cases and that of epilepsy in 10.6%. The past history of brain damage was noted in 16% of the cases. EEG abnormalities were noticed in 15.15% of simple type and 26.4% of complicated type. The clinical correlates with EEG's were aslfollows:
A. Incidence of EEG abnormalities was statistically higher in cases of complicated type, than in simple type Similarly significant were the findings that cases with age of onset over twolyears, history of possible brain damage, and frequent attacks of febrile convulsions presented abnormal EEG more frequently than those with age of onset before two years, negative history of brain damage and less frequent attacks.
B. The following three items showed apparent differences in incidence of EEG abnormalities, which was not significant statistically.
1) Family history of epilepsy or febrile convulsions.
2) Association of mental retardation.
3) Persistence of attacks over five years of age.
C. There was no correlation between the incidence of EEG abnormality and duration of convulsions or the postictal clinical condition.
