Stress can bring on mysterious rashes or flare-ups of preexisting conditions. That’s because it can throw off your immune system—not to mention your skin’s defenses—out of whack. When these are lowered, you could become susceptible to rash-causing skin infections caused by staph. On the flip side, if your immunity goes into overdrive, your skin will become more sensitive, making a dormant issue like eczema act up.
In either case, gentle OTC moisturizers, can help you heal. “If that doesn’t help, or if the rash is accompanied by a fever or other flu-like symptoms—chills, sweating—see your doctor right away.