Yes, they are. I started getting panic attacks a couple years ago, but in the past 10 months they really escalated. The weird thing is that I can feel like I'm having a heart attack(palpitations, chest pain, shortness of breath, throat closes up) and at the same time i know it's just a panic attack. I've been seen several times and the EKGs are fine. Of course, that doesn't stop the panic attack. It just makes me get more anxious because I'm HAVING the panic attack.
I've had severe depression this year, which made the panic attacks exponentially worse. I'm on several meds now, plus therapy which is all helping with the anxiety. At this point it's mostly manageable with occasional flare-ups. At least I don't feel like I'm going to die every day now.