Q:

Word for widespread problem

I'm trying to come up with an noun that communicates a widespread problem.  Namely, the fact that 1 person has such a problem isn't a bad thing, but the fact that so many people have this problem is the issue.
I've come up with pandemic, but a pandemic is a huge problem that is also widespread.
What's the word for a little problem that is made big because it is widespread?

A:

Consider:
This problem has become rampant.

