A 45-year-old male who recently had a heart attack is now experiencing difficulties sleeping. He wakes up several times at night with nightmares about having another heart attack. What could be the potential cause of his insomnia, and what steps can be taken to address it?
This patient's insomnia might be associated with post-traumatic stress disorder (PTSD) following his heart attack. The nightmares and fear of another heart attack could be causing his sleep disturbances. The patient might benefit from psychological therapy, including cognitive-behavioral therapy (CBT) and possibly medication if symptoms are severe. Referral to a mental health professional would be appropriate.