Panic and anxiety attacks

I wanted to ask others about panic and anxiety attacks. I read that panic attacks are environmental and so I would react to whats there. I read that anxiety attacks are triggered by stress, trauma you know like emotional mind stuff. I'm not sure well? actually I dont know but these two types of attacks have similar physical symptons but anxiety can be intense. Like breathless, nausea, pressure on the chest and maybe arm, neck, back.

I have had this and there is no heart problems or Dr doesn't suspect angina. When I get this I try to ground. My last episode I wasn't stressed of course my SBD 1 is always maintenance but I didnt think it would cause me to have these 2 types of attacks.

Can someone shed light on this? or suggest other test that I should have?? cheers in advance 🙂