How to tell what status effect is on character?

You should be able to see more detail on the tactical screen, otherwise it's visual effects and combat text. 

There's a blue and purple mask status icon with 3 stacks stuck on my character even in skyhold, and they're also surrounded by black and purple smoke.  What is this and how do i get rid of it?    

@Kallian89 Sounds like the 'elusive' bug people have been getting since Trespasser released. I think it comes from an upgrade to 'toxic cloud' (sabotage skill tree for rogues), it's not supposed to stay on your forever but apparently it... does. I suggest checking all your rogues, and if they have that upgrade active, switch to the other upgrade or disable to skill in their tactics. Unfortunately, not sure if that will actually get rid of it, just prevent it from happening again. I think someone with the problem found dying got rid of it? (Not the best solution but... a solution). 

Hope that helps. 🙂

Thanks! I'll give those things a try!