Table 3 Characteristics of patients with parkinsonism.

	Patient 1	Patient 2	Patient 3	Patient 4	Patient 5	Patient 6	Patient 7	Patient 8	Patient 9
Age (years)	55	49	42	43	44	61	39	29	51
Age at diagnosis of epilepsy (years)	46	27	7	27	Birth	53	5	23	Late teens
Sex	F	M	M	M	F	F	F	F	M
Anticonvulsant drugs at time of assessment	Carbamazepine, lamotrigine	Lamotrigine	Vigabatrin, zonisamide	Valproate, clobazam	Valproate	Valproate, gabapentin	Valproate	Valproate, carbamazepine	Valproate
UPDRS*	10.5	13	11	13	14	15	16	16.5	18
Duration on VPA (years)				2	7	4	2	13	16
Other movement disorders		Postural tremor			Postural tremor	Postural tremor	Postural tremor, dystonia	Postural tremor	Postural tremor
Other features of potential importance		Retinitis pigmentosa		Taking risperidone for 3 months at the time of assessment	Atypical tremor with variability and distractibility	Coeliac disease diagnosed 6 months before onset of seizures	Cerebral palsy with mild left sided hemiparesis; left limbs smaller than right	Neurofibromatosis;
						Acute onset, progressive cognitive decline 2 years after starting valproate
Seizure type	Complex partial	Complex partial	Complex partial	Simple partial with secondary generalisation	Complex partial	Unclassified	Complex partial	Complex partial	Primary generalised

F, female; M, male; UPDRS, Unified Parkinson's Disease Rating Scale; VPA, valproate .

*Modified UPDRS III (all items of UPDRS III were assessed, but only the most involved hemibody (upper and lower limbs) was recorded for items 20, 21, 22, 23, 24, 25 and 26 for a total maximum score of 56).