(HealthDay News) — Psoriasis, a chronic skin condition that affects some 4.5 million American adults, is characterized by red, scaly skin patches. Psoriasis can appear on any part of the body, including the scalp, face, hands and feet.

Stress can be a major trigger for psoriasis, the National Psoriasis Foundation says. Taking time to relax and manage stress can help alleviate flare-ups. Any damage to the skin, including scratches or sunburn, can also trigger an outbreak.

The seo tips foundation also notes that certain medications can contribute to psoriasis symptoms, including lithium, antimalarial drugs, and certain drugs used to treat high blood pressure and arthritis. Allergies, weather and diet can also impact psoriasis.

Discuss with your doctor how to best control your symptoms.