A Look at Psoriasis Severity

More Common Than You Might Think

In the United States alone, about 7.5 million people have psoriasis. The most common type, which affects about 80% of people with the condition, is plaque psoriasis. Like rheumatoid arthritis and multiple sclerosis, psoriasis is an autoimmune disease that isn't well-understood.

Medically Reviewed By: William C. Lloyd III, MD, FACS | Last Review Date:

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Medical References

  1. About Psoriasis. National Psoriasis Foundation. http://www.psoriasis.org/about-psoriasis
  2. Psoriasis Causes and Known Triggers. National Psoriasis Foundation. http://www.psoriasis.org/about-psoriasis/causes
  3. Moderate to Severe Psoriasis: Biologic Drugs. National Psoriasis Foundation. http://www.psoriasis.org/about-psoriasis/treatments/biologics
  4. Psoriasis Severity. National Psoriasis Foundation. http://www.psoriasis.org/about-psoriasis/treatments/severity
  5. Types of Psoriasis. National Psoriasis Foundation. http://www.psoriasis.org/about-psoriasis/types
  6. Psoriasis and Mental Health Issue Brief. National Psoriasis Foundation. January 2012 http://www.psoriasis.org/document.doc?id=350

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