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The 7 Types of Psoriasis


Erythrodermic Psoriasis

This type is the least common, but it's very serious. It affects most of your body and causes widespread, fiery skin that appears burned. You might also have:

If you have these symptoms, see your doctor right away. You may need to get treated in a hospital. This type of psoriasis can cause severe illness from protein and fluid loss. You may also develop an infection, pneumonia, or congestive heart failure.

Triggers include:

Erythrodermic psoriasis may also happen if your psoriasis is hard to control.

Nail Psoriasis

Up to half of those with psoriasis have nail changes. This is even more common in people who have psoriatic arthritis, which affects your joints.

Common symptoms include:

  • Pitting of your nails
  • Tender, painful nails
  • Separation of the nail from the bed
  • Color changes (yellow-brown)
  • Chalk-like material under your nails

You're also more likely to also have a fungal infection.

Psoriatic Arthritis

This is a condition where you have both psoriasis and arthritis (joint inflammation). In 70% of cases, people have psoriasis for about 10 years before developing psoriatic arthritis. About 90% of people with it also have nail changes. The most common symptoms are:

  • Painful, stiff joints that are worse in the morning and after rest
  • Sausage-like swelling of the fingers and toes
  • Warm joints that may be discolored

WebMD Medical Reference

Reviewed by Debra Jaliman, MD on November 19, 2014
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