@SeraphimDawn  
Binge eating (or binging in general) is a actually a fairly common accompaniment to depression or stress. The brain’s reward system encourages the behavior to a degree as when we really let go and binge we can, for awhile, feel better by doing it due to various chemical releases. When it comes to eating the consumption of sugar and fat in particular is most ‘rewarded’ by the brain making foods high in those the most common targets for binging. (It’s rather rare to hear someone confess to ‘totally pigging out on bread and broccoli’ for instance…)
 
For Americans ice cream certainly fits that bill being mostly milk fat, sugar, and air and a treat/indulgence almost everyone in the country has been raised on. (it has the bonus of often being readily to hand in quantities sufficient for gorging as well) Hollywood is in America and Hollywood tends to set trends in visual short hand. I can’t tell you when it started, but I’m sure someone did it once, a few others copied it, and from their overtime it became visual shorthand for ‘depressed/stressed out’ in much the same manner as seeing beer bottles/cans scattered all over is.

Oh… She do not diarrhea? =/

What is with ice cream craving being associated with depression?

The alternate cut:  

Ah, love this.