Final answer:
Option D). In teaching about PTSD, the nurse should include nightmares as a common clinical manifestation, along with other symptoms like flashbacks and hyperarousal.
Step-by-step explanation:
Nightmares would need to be mentioned as a symptom by a nurse educating families about the typical clinical manifestations of post-traumatic stress disorder (PTSD). Anxiety disorders like post-traumatic stress disorder (PTSD) can arise from experiencing significant psychological trauma, which can be caused by a variety of stressful situations like assaults, natural disasters, or military warfare. Since the disorder frequently includes reliving the traumatic experience through intrusive thoughts, dreams, or flashbacks, nightmares are a common symptom. Hyperarousal (difficulty sleeping or quickly startled), avoidance of reminders of the trauma, and adverse mood and cognitive changes are some other symptoms that may be present.