Tardive and spontaneous dyskinesia incidence in the general population

BMC Psychiatry

Table 1 Counts of dyskinesia according to ICD-9 classification

ICD-9 codes	Description	No.	%	No.^a	%^a
	Tardive dyskinesia – drug related …
333.81	Blepharospasm	11	32.4	8	32.0
333.82/333.85	Orofacial or subacute dyskinesia	11	32.4	8	32.0
333.83	Spasmodic torticollis	10	29.4	7	28.0
333.89	Other	2	5.8	2	8.0
		34		25
	Spontaneous dyskinesia – non-drug related …
333.81	Blepharospasm	105	45.8	67	45.6
333.82	Orofacial or subacute dyskinesia	34	14.8	26	17.7
333.83	Spasmodic torticollis	77	33.6	48	32.6
333.84	Organic writers’ cramp	3	1.3	2	1.4
333.89	Other	10	4.4	4	2.7
		229		147

ISSN: 1471-244X