| Age of Onset-- | <1 Year | 1-5 Years | >5 Years |
| Cause | |||
| IDIOPATHIC EPILEPSY | X | ||
| SYMPTOMATIC EPILEPSY | |||
| Extracranial | |||
| -Metabolic | |||
| --Hypoglycemia | X | ||
| --Hypocalcemia | X | X | |
| --Hepatic encephalopathy | X | X | |
| --Hyperlipoproteinemia | X | X | |
| -Toxic | X | X | X |
 | |||
| Intracranial | |||
| -Developmental | |||
| --Hydrocephalus | X | ||
| --Lissencephaly | X | ||
| --Metabolic storage diseases |
X | ||
| -Neoplastic | X | ||
| -Inflammatroy | |||
| --Rabies | X | X | X |
| --Distemper | X | X | X |
| --Rickettsial diseases | X | X | X |
| --Protozoal diseases | X | X | X |
| --Fungal diseases | X | X | X |
| --Granulomatous Meningo-Encephalitis |
X | ||
| -Trauma | X | X | X |
| Vascular | X |
