J Neuropsychiatry Clin Neurosci 1997; 9:231-239
Copyright © 1997 by American Neuropsychiatric Association
Methylphenidate treatment of negative symptoms in patients with dementia
I Galynker, C Ieronimo, C Miner, J Rosenblum, N Vilkas and R Rosenthal
Milton and Carroll Petrie Division, Beth Israel Medical Center, New York, NY 10003, USA.
This pilot study evaluated response of negative symptoms (NS) to
methylphenidate in patients with dementia and relationships between NS,
depression, and cognitive deficits in these patients. Consecutively
admitted patients with NS and dementia--12 with dementia of Alzheimer's
type and 15 with vascular dementia--were rated on severity of NS (SANS and
PANSS-N scales), depressive symptoms (Ham-D), and cognitive impairment
(MMSE) before and after treatment with methylphenidate. NS decreased
significantly, and cognitive scores increased. A decrease in depression
scores was nonsignificant after all variance attributable to NS was
removed. NS, depression, and cognitive scores were not significantly
intercorrelated. Results were similar for Alzheimer's and vascular dementia
patients. Negative symptoms in dementia patients appear responsive to
methylphenidate treatment. This effect may underlie putative changes in
symptoms of depression observed by other researchers.