Sleep disturbances are found in most depressive patients. Serotonin re
uptake inhibitors, such as fluoxetine hydrochloride, seem to improve s
leep by changing the depressive affect and the underlying biological m
echanisms. Insomnia is an occasional adverse effect of the medication,
but it was shown that only 2-3% of the patients with fluoxetine-induc
ed insomnia discontinued the drug for this reason. We could not find a
ny report of nightmares or night terrors under fluoxetine treatment. W
e report on four patients who experienced nightmares on fluoxetine mon
otherapy.