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How are psoriasis and psoriatic arthritis different?

ANSWER

Psoriasis doesn't cause scarring or any other lasting harm to skin. But psoriatic arthritis can damage joints and leave them stiff and deformed if it isn't treated.

SOURCES:

American College of Rheumatology: "Psoriatic arthritis."

National Psoriasis Foundation: "Psoriatic arthritis."

Philip Mease, MD, Seattle Rheumatology Associates.

John Hardin, MD, chief scientific officer, Arthritis Foundation; professor of medicine, Albert Einstein College of Medicine, New York City.

Arthritis Foundation: "Psoriatic arthritis."

Mark Lebwohl, MD, professor and chairman of dermatology, Mount Sinai School of Medicine.

The Johns Hopkins Arthritis Center: "Psoriatic arthritis," "New Onset Psoriatic Arthritis Reported in Psoriasis Patients Treated with Efalizumab."

Viguier, M.   , May 2008. Arthritis Rheum

Reviewed by David Zelman on May 5, 2017

SOURCES:

American College of Rheumatology: "Psoriatic arthritis."

National Psoriasis Foundation: "Psoriatic arthritis."

Philip Mease, MD, Seattle Rheumatology Associates.

John Hardin, MD, chief scientific officer, Arthritis Foundation; professor of medicine, Albert Einstein College of Medicine, New York City.

Arthritis Foundation: "Psoriatic arthritis."

Mark Lebwohl, MD, professor and chairman of dermatology, Mount Sinai School of Medicine.

The Johns Hopkins Arthritis Center: "Psoriatic arthritis," "New Onset Psoriatic Arthritis Reported in Psoriasis Patients Treated with Efalizumab."

Viguier, M.   , May 2008. Arthritis Rheum

Reviewed by David Zelman on May 5, 2017

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How can exercise help to manage psoriatic arthritis?

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