Hello thanks for asking from Health Care Magic
You have been taking Ambien (Zolpidem) since many years and the drug has resulted in tolerance. You are not able to sleep with this drug. You have main complaints of insomnia. Recently you have developed
post traumatic stress disorder after a traumatic incident. Your problems of insomnia have worsened. You have symptoms like waking up in night, sweating, screaming in night,
nightmares. You are currently taking ativan or lorazepam. Lorazepam is
benzodiazepine and the drug can help in sleep but it can't relieve severe anxiety of PTSS. The symptoms of nightmares are getting worsened with this drug.
Proper treatment of PTSS is done with SSRIs especially Paroxetin, Sertraline etc. Paroxetine also cause sedation so this drug will help in good sleep also. The drug will also improve your anxiety and night mares. I would advise you to
consult a psychiatrist for treatment of PTSS and your problem of insomnia. Insomnia will improve with improvement of symptoms of PTSS.
Also try relaxation exercises and improve
sleep hygiene to get good sleep.
Thanks, hope this helps you.