The following steps can help you prevent psoriasis or improve your skin condition if you have psoriasis:

• Treat all infections promptly. Infections can cause flares of psoriasis, especially strep throat infections.
• Minimize stress, which may make psoriasis worse.
• Try to avoid skin injuries and irritation, which can cause new sores or make sores worse. Tight shoes, clothing, watchbands, and hats can irritate the skin.
• Avoid harsh chemicals and makeup that can irritate the skin.
• Use a home humidifier to increase moisture in the air and help keep your skin moist.