Question about Anxiety

What does having a panic attack/ anxiety attack feel like to you? How would you describe it ? Mine are always brought on by irrational thoughts (i.e. my house is on fire), I have these consuming thoughts, heart palpitations, I can't stop crying when though I don't know why I'm crying, I get shaky, and feel like I'm going to die or someone I love is going to die. How would you describe your anxiety attacks?