Another day, another TikTok mass diagnosis trend is sounding the alarm on our health. Thousands of videos on the app have users talking about "cortisol face" or "moon face," characterized by a round, puffy appearance due to excess levels of cortisol , commonly known as the stress hormone. The condition often brings with it inflammation , facial swelling, and bloating.

It's not so much the condition itself that's causing concern among medical professionals and skeptical users; rather, it's the perception the trend is creating of it being extremely common and self-treatable that's unsettling. While many users are claiming stress is causing their puffy facial appearance — after all, who isn't stressed these days? — the question remains: Is cortisol face really something we have to worry about? PS got to the bottom of this concerning trend. Caroline Messer , MD, is an endocrinologist at Fifth Avenue Endocrinology and Founder of Well by Messer .

Lucky Sekhon , MD, is a double board-certified reproductive endocrinology and infertility (REI) specialist and OBGYN at RMA of New York . What Is Cortisol Face or Moon Face? "Cortisol face is a description of the face as it gradually becomes rounder and fuller due to excess cortisol," endocrinologist Caroline Messer, MD, tells PS. "It's [often] referred to as 'moon face' because the face appears so puffy that the ears are unable to be visualized, and the face becomes a near-perfect circle.

The roundness can be exacerbated by fat deposi.