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Similar discontinuation symptoms for withdrawal from medium-dose paroxetine and venlafaxine after nine years in the same patient
Department of Neurosciences, Psychiatry Unit, Sapienza University, 2nd Medical School, Sant'Andrea Hospital, Rome, Italy.
* To whom correspondence should be addressed.
A woman who had developed a discontinuation syndrome nine years ago with paroxetine tapered from 10 to 5mg/day represented the same syndrome recently when she occasionally missed her 75mg q 12 h venlafaxine doses. The symptoms, comprising agitation, numbness, pricking sensations, sweating, difficulty concentrating, weakness, derealisation and perceived xerophthalmia, immediately subside upon drug dose reinstitution. The patient had used cannabis irregularly before the onset of pauci-symptomatic panic attacks, but none of her panic symptoms were present in her withdrawal symptomatology. Some symptoms waxed and waned during the withdrawal period. The syndrome is compatible with both hyper- and hypoactivity of the central serotonergic system. Key Words: selective-serotonin re-uptake inhibitors, discontinuation syndrome, paroxetine, venlafaxine, dry eye (xerophthalmia), cannabis use, cross-sensitisation
First published on January 21, 2008, doi:10.1177/0269881107081562 |
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