Nightmares that replicate traumatic events are among the criteria that defi
ne posttraumatic stress disorder (PTSD); however; there has been limited sy
stematic assessment of the content of dreams in PTSD. A PTSD dream rating i
nstrument was developed to operationalize features attributed to dreams ass
ociated with combat-related PTSD that incorporated dimensions from the drea
m content analysis literature, and its reliability was assessed. Then the i
nstrument was used to characterize dream reports in 18 Vietnam combat veter
ans diagnosed with PTSD. Approximately half of the group's target dreams co
ntained features characteristic of combat, and all but 3 (17%) were moderat
ely to highly threatening. Fifty-three percent were set at least partially
in the present and 79% contained distorted elements. We therefore conclude
that target dreams of combat veterans with PTSD vary with regard to replica
tion of trauma and elements normally associated with dreaming, but typicall
y are threatening.