Explanation: Some people say certain foods trigger their psoriasis, but scientific studies haven't found a connection. Strep throat, cold, dry weather, and stress, on the other hand, are among common psoriasis triggers.
Other triggers include skin injuries -- like a cut, scratch, or bad sunburn -- and taking certain medications. What if your skin gets worse after eating a particular food? Cut it out of your diet for a few weeks and see what happens. And talk to your doctor about a healthy diet.