Diagnostic classification of organic psychiatric disorders after aneurysmal subarachnoid hemorrhage: a comparison between ICD-10, DSM-IV and the Lindqvist & Malmgren classification system.
OBJECTIVE
There is no universally accepted consensus for organic psychiatric disorders (OPDs) between the two major classifications, ICD-10 and DSM-IV. The aim was to compare the coverage of these systems with the Lindqvist & Malmgren (LM) classification system for organic psychiatry.


METHODS
Organic psychiatric disorders were diagnosed according to ICD-10, DSM-IV, and the LM system in 119 patients 12 months after surgery as a result of aneurysmal subarachnoid hemorrhage.


RESULTS
Among 35 patients with astheno-emotional (AE) disorder (LM system), 83% (95% CI: 67-92%) had mild cognitive disorder (MCD) according to ICD-10 clinical descriptions and diagnostic guidelines (CDDG), 49% (95% CI: 33-64%) had MCD according to ICD-10 diagnostic criteria for research (DCR), and 34% (95% CI: 21-51%) had mild neurocognitive disorder according to DSM-IV. The coverage for other OPDs did not differ between the systems.


CONCLUSIONS
The coverage for AE disorder (LM system) was significantly higher than the corresponding diagnoses of the ICD-10 and DSM-IV systems. Modifications of the latter systems are suggested.
Rödholm
M
M
Unit for Neuropsychology and Neuropsychiatry, Sahlgrenska University Hospital, Göteborg, Sweden. martin.rodholm@vgregion.se
Hellström
P
P
Bilting
M
M
Starmark
J-E
JE
D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019965:Neurocognitive Disorders / Q000145:classification* / Q000175:diagnosis* / Q000209:etiology / Q000523:psychology; D009483:Neuropsychological Tests; D011569:Psychiatric Status Rating Scales; D013345:Subarachnoid Hemorrhage / Q000150:complications / Q000523:psychology*; D009626:Terminology as Topic; D018875:Vocabulary, Controlled