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  1. Psoriasis - Symptoms and causes - Mayo Clinic

    Dec 17, 2025 · Psoriasis is a skin disease that causes a rash with itchy, scaly patches, most commonly on the knees, elbows, trunk and scalp. Psoriasis is a common, long-term (chronic) …

  2. Psoriasis: Types, Causes, Symptoms, & Treatment - WebMD

    Psoriasis can last for years. Learn more about the types, symptoms, causes, and effective treatment options for psoriasis.

  3. Psoriasis: Causes, Triggers, Treatment, and More - Healthline

    Jul 11, 2025 · Psoriasis is a chronic skin condition that can cause red, scaly patches of skin to appear. Learn more about what it is, why it appears, and how it’s treated.

  4. Psoriasis: Symptoms, Treatment, Images and More - DermNet

    What is psoriasis? Psoriasis is a chronic inflammatory skin condition characterised by clearly defined, red and scaly plaques. It is classified into several types. Who gets psoriasis? …

  5. Psoriasis Symptoms, Causes, & Risk Factors | NIAMS

    Psoriasis is a chronic autoimmune skin disease where patches of skin become red & scaly. Learn more about the types, symptoms,& possible causes of psoriasis.

  6. Psoriasis - Penn Medicine

    Aug 5, 2024 · Psoriasis is a skin condition that causes skin redness, silvery scales, and irritation. Most people with psoriasis have thick, red, well-defined patches of skin with flaky, silver-white …