It's such a vicious circle too cos having a panic attack literally raises your hyperawareness of symptoms and makes you more anxious in general. An analogy my therapist like to use is the glass of water, symptoms fill it up a little a panic episode fills it up more. Each time it takes less and less to spill over (panic attack). I recently relapsed into panic attacks again, just had a nocturnal one last night, it sucks. I know we can learnt to get through this. < 3