| Seizure semiology | Number | Percent (%) | Percent (%) of cases |
| Epileptic spasm | 73 | 23.9 | 45.1 |
| Myoclonic seizure | 65 | 21.3 | 40.1 |
| Tonic | 37 | 12.1 | 22.8 |
| Atonic | 31 | 10.2 | 19.1 |
| Generalized tonic clonic | 30 | 9.8 | 18.5 |
| Clonic | 24 | 7.9 | 14.8 |
| Focal onset | 22 | 7.2 | 13.6 |
| Absence | 16 | 5.2 | 9.9 |
| Focal followed by secondary generalization | 7 | 2.3 | 4.3 |