What do strangers think when someone has a panic attack around them?

A stranger might be put off or alarmed by a panic attack if they don't know what's going on. Panic attacks look different for everyone, there is no one set definition on what happens when you have a panic attack. Hyperventilating and crying are just two symptoms that are commonly seen. I think most strangers unfortunately shy away from such situations, alarmed and disturbed. But occasionally you might meet that one kind hearted person who is willing to sit with you and hold your hand while you calm down. They to might just understand what hell it is to have a panic attack.