Amber Smith's post features one photo of herself looking polished and another photo where she's crying. The post has now been shared more than 5,000 times on the social network.
"Top picture: What I showcase to the world via social media. Dressed up, make up done, filters galore. The 'normal' side to me."
She then described the contrasting picture.
"Bottom picture: Taken tonight shortly after suffering from a panic attack because of my anxiety. Also the 'normal' side to me that most people don't see."
Smith, 22, told ABC News that she penned the post because her friends didn't understand how she suffered silently.
"I kind of reached a point where I recently wasn't feeling too good with everything and I got forced to go out with some friends," she said. "[My friends] kept saying, 'Why are you late for this...? The whole time they didn't know that I've been at home feeling nauseous, panicky, feeling sick and just generally not in a good place."
Smith said she has been living with depression and anxiety since she was 16. She was officially diagnosed only three years ago.