Psoriasis is a chronic, inflammatory skin disease. Knees, elbows, scalp, trunk, and nails are the most commonly affected areas. There are several types of psoriasis.

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Find answers in our in-depth report on psoriasis:

• How can I reduce my risk?
• How is it diagnosed?
• How is it treated?
• What should I ask my healthcare provider about psoriasis?
• What are the risk factors?
• What are the screening tests?
• What are the symptoms?
• What is psoriasis?

The impact of psoriasis on the skin can be very visible. What is often not so apparent is the toll it can take on sufferers' experiences, feelings, and behaviors.

• Eczema (Atopic dermatitis)
• Gout
• Lupus
• Osteoarthritis
• Rheumatoid arthritis
• Seborrheic dermatitis