As much as stressed skin is a term, I don't think it is an actual diagnosis, however I find myself saying it quite a lot. There are so many reasons that our skin can be 'stressed' that it can happen quite often.
Now, obviously, your skin isn't worrying about paying rent, somebody not texting them back or running late for a meeting, but nevertheless, it can still get rather stressed.
WHAT CAUSES STRESSED SKIN?
So many things. Some are short-term stressors and some more chronic, but to be honest they can usually be both treated quite similarly. Here are some examples...
eczema and psoriasis flare ups
dull and dehydrated skin