Although breathing into a paper bag was a common recommendation for short-term treatment of symptoms of an acute panic attack,[45] it has been criticized as inferior to measured breathing, potentially worsening the panic attack and possibly reducing needed blood oxygen.[46][47] While the paper bag technique increases needed carbon dioxide and so reduces symptoms, it may excessively lower oxygen levels in the blood stream.
Post-traumatic stress disorder -- or PTSD -- was considered to be a type of anxiety disorder in earlier versions of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders. But in 2013, PTSD was reclassified as its own condition. It describes a range of emotional reactions caused by exposure to either death or near-death circumstances (such as fires, floods, earthquakes, shootings, assault, automobile accidents, or wars) or to events that threaten one's own or another person's physical well-being. The traumatic event is re-experienced with fear of feelings of helplessness or horror and may appear in thoughts and dreams. Common behaviors include the following:
So I can tell you that panic attacks aren't dangerous, but I recognize that this is "easy for me to say". If you're having anxiety attacks, especially if they're a relatively new occurrence for you, you might not be able to believe this right now. That's entirely understandable when you feel that your life is threatened! You don't need to take anything here on faith. Instead, check it all out. Test everything I say against your own experience, as you work your way through this site.
Desperate for help, he reached out to the Anxiety and Depression Association of America, which sent him a list of therapists experienced in treating panic attacks and anxiety. “This is how I got better," Sideman says. "I found a therapist who understood what panic disorder was, understood agoraphobia, and knew cognitive behavioral therapy, which I had not known about.” He also started practicing meditation.

Shortness of breath and chest pain are the predominant symptoms. People experiencing a panic attack may incorrectly attribute them to a heart attack and thus seek treatment in an emergency room. Because chest pain and shortness of breath are hallmark symptoms of cardiovascular illnesses, including unstable angina and myocardial infarction (heart attack), a diagnosis of exclusion (ruling out other conditions) must be performed before diagnosing a panic attack. It is especially important to do this for people whose mental health and heart health statuses are unknown. This can be done using an electrocardiogram and mental health assessments.

So I don’t know if I had a panic attack or anxiety attack. It happened last night after me and gf got into an argument and basically went to bed mad and angry. I woke up about 4am to her pushing the back of head to pulling towards her to give me a kiss. My heart was pounding really hard, I couldnt barely breath regularly like I should but couldn’t. I felt mildly nausea, and felt like throwing up but I never did and I was feeling a bit light-headed. This is my first time having this happen and I don’t thinks it’s happened least not to my knowledge cause I never knew what the signs were for having an anxiety attack or a panic attack.

People with panic disorder often worry about when the next attack will happen and actively try to prevent future attacks by avoiding places, situations, or behaviors they associate with panic attacks. Worry about panic attacks, and the effort spent trying to avoid attacks, cause significant problems in various areas of the person’s life, including the development of agoraphobia (see below).