How to find out if someone is using your picture as their profile pic?

[Maria]

I think someone is using my picture as their own on facebook. I tried google image search but nothing shows up. Many people have told me they've seen my pic on facebook but cant remember which account. How can I figure out whos doing it
most have said they tell the person that their stealing my photo and the person blocks them!

[pepsimax94]

If people are telling you they have seen it, why haven't they told you where it is? Did they not provide screenshots? Ya know, people will make up lies just for fun because that's the internet.

[abraXus]

there is no way to just check to see if someone is using your picture, you have to just randomly stumble upon it

and never confront the person, just report it to facebook and let them deal with it - you will probably have to also prove that it's actually you