T. Pourmotabbed et al., TREATMENT, DISCONTINUATION, AND PSYCHOMOTOR EFFECTS OF DIAZEPAM IN WOMEN WITH GENERALIZED ANXIETY DISORDER, Journal of clinical psychopharmacology, 16(3), 1996, pp. 202-207
Twenty-one women with generalized anxiety disorder (GAD) participated
in a 6-week, double-blind, placebo-controlled trial to assess the trea
tment and abrupt withdrawal effects of diazepam on psychic and somatic
symptoms of anxiety. The results confirmed those of previous studies
reporting that (1) clinical doses of diazepam are effective in attenua
ting the symptoms of generalized anxiety to a greater extent than plac
ebo during the first 3 weeks of treatment; (2) somatic symptoms are mo
re responsive to diazepam treatment than psychic symptoms; and (3) pat
ients taking diazepam exhibit increased anxiety upon abrupt withdrawal
of medication. This finding, combined with the fact that diazepam dis
continuation did not produce withdrawal effects in nonanxious voluntee
rs, suggests that diazepam discontinuation after 6 weeks results in re
bound anxiety rather than a physical withdrawal syndrome. Diazepam did
not improve psychomotor performance in GAD patients. Psychomotor impa
irment after 6 weeks of diazepam was similar to that seen in nonanxiou
s volunteers.