Health Tip: Aggravating Psoriasis

(HealthDay News) -- Psoriasis is an immune system disorder that causes red, scaly patches of skin.

The American Academy of Family Physicians says the following triggers can cause the disorder to flare:

• Having an infection, such as the common cold or strep throat.
• Having a disease that weakens the immune system.
• Being under stress.
• Being a smoker.
• Irritating the skin.
• Being exposed to cold.
• Taking certain medications, such as beta blockers for high blood pressure.