Facial dysmorphic features
| Feature | Exposed to valproate only (total 34) |
Valproate+other anticonvulsant (total 12) |
Anticonvulsant other than valproate (total 10) |
| Broad forehead | 19 (56%) | 5 (42%) | 3 (30%) |
| High forehead | 12 (35%) | 2 (17%) | 0 |
| Medial deficiency of eyebrow | 11 (32%) | 3 (25%) | 6 (60%) |
| Epicanthic folds | 6 (18%) | 1 (8%) | 2 (20%) |
| Infraorbital grooves | 20 (59%) | 7 (58%) | 2 (20%) |
| Narrow palpebral fissures | 3 (9%) | 4 (33%) | 3 (30%) |
| Broad nasal root | 23 (68%) | 10 (83%) | 5 (50%) |
| Short nose | 12 (35%) | 8 (67%) | 2 (20%) |
| Anteverted nares | 19 (56%) | 8 (67%) | 2 (20%) |
| Broad or flat nasal tip | 20 (59%) | 5 (42%) | 6 (60%) |
| Long philtrum | 17 (50%) | 7 (58%) | 3 (30%) |
| Smooth philtrum | 23 (68%) | 10 (83%) | 7 (70%) |
| Thin upper lip | 26 (76%) | 11 (92%) | 6 (60%) |
| Thick lower lip | 9 (26%) | 1 (8%) | 3 (30%) |
| Downturned mouth | 12 (35%) | 2 (17%) | 1 (10%) |