I have all the symptoms of panic attack with no fear or dread. they last about 3 hours with the help of 1mg lorazepam. symptoms include chills, clattering teeth, vomiting, tremors, diarrhea, fast heart beat, shortness of breath.i once woke up at 5:30 am w

I : I would strongly recommend a careful medical evaluation to rule out other medical conditions that could mimic panic attacks - for example hyperthyroidism . In any event, if the medical evaluation is unremarkable , you could talk to your psychiatrist and consider treatment with an ssri as well as cognitive behavioral therapy.

Get it evaluated: There are medical conditions that can cause release of hormones and other substances that will produce these symptoms for no obvious (perceived) reason. Get to your physician for a thorough evaluation asap.