I have only ever had one ambulance put to me due to panic attacks and I didn't go to hospital. That was the first ever panic attack I had. I suffer with panic attacks often and the symptoms can vary from person to person. The thinking that it dying isn't only just with a panic attack that's what people with anxiety suffer with usually all the time. Doesn't have to be during a panic attack.

When I panic and when people I know with anxiety panic, this symptoms are quite like it having a heart attack.

If u look up fight or flight response all about the sympathetic and parasymoathetic nervous system u will see what it's like to have a panic attack.

Usual symptoms are - shallow quick breathing, tight chest, pains in chest, breathlessness, sweating, shaking, faint feeling, needing to go to the toilet suddenly, light headedness/dizziness, disorientation, a weird feeling unable to describe, feeling u might die, racing heart and pulse, feeling like it heart is going to beat out of your chest, nausea or vomiting and people have other symptoms that other don't like I have weird feelings in my ears and whooshing in my head. Some feel as though blood I as rushing through them especially their chest.

Hope that helped.

Kez