Suggest Remedy To Stop Red Splotches On Chest While Being Angry Or Frustrated

I'm 19 and have been getting red splotches on my chest ever since I began middle school. It happens whenever I get nervous, angry, frustrated, or feel uncomfortable. It's very embarrassing and I feel like I need to wear shirts that cover my chest to avoid anyone from seeing my condition. It's running my life! Just wanted to know if there is anything I can do to make this go away.