I think that a depressive reaction to depressing circumstances is a reasonable and healthy response, and counseling can help to restore perspective. I believe it's the degree of depression that matters; for instance, if the breakup of a relationship results in catatonia and a complete break with reality...well, that would be a disproportionate reaction and would most certainly need intervention. On the other hand, discerning between a true psychiatric emergency and attention-seeking histrionics must be difficult for healthcare providers at times.

I've heard that the DSM-5 criteria are now so broad that 90% of Americans can potentially be diagnosed as mentally ill.