Having a moon face (or what some call "cortisol face") due to prednisone side effects means that your face has taken on extra roundness, especially in the areas in front of your ears.

Moon face can happen to anyone who takes prednisone. But there’s some evidence that it occurs more often in women and in people with higher weight when they begin taking prednisone.

Moon face, a common side effect of steroids such as prednisone, involves facial swelling and puffiness. Other possible causes include Cushing's syndrome and weight gain. Learn more.

Moon face can occur with long-term use of steroid drugs such as prednisone. Clinical trials of the medication didn’t report how often this side effect occurred.

Social media influencers claim “moon face,” a round, puffy face that comes with the use of steroids, can be caused by everyday stress. Here’s what the experts say.