Table 3.
Differential diagnosis of seizure and syncope
| Syncope | Seizure | |
|---|---|---|
| Trigger (position, emotion) | Common | Rare |
| Sweating/nausea | Common | Rare |
| Pallor | Common | Rare |
| Unilateral symptom | Rare | Common |
| Cyanosis | Rare | Common |
| Duration of LOC | < 20 seconds | Minutes to hours |
| Movements | A few clonic | Tonic-clonic |
| Tongue biting | Rare | Common |
| Frothing | Rare | Common |
| Confusion | Rare, < 30 seconds | Common, >minutes |
| Myalgia | Rare | Common |
| Eyeball deviation | Upward | Lateral |
| Periorbital petechial hemorrhage | No | Yes |
LOC, loss of consciousness.