Plaque psoriasis may seem as if it is only skin deep, but it actually starts below the surface. The plaque thickness, scaling and redness you see are caused, in part by an overactive immune system. Watch this video to learn more about what causes psoriasis from the inside out.
What Does Plaque Psoriasis Look Like?
Patients often show symptoms of plaque psoriasis on their knees, elbows, and torso.
Psoriasis Is Different For Everyone—3 Levels of Severity
Some plaque psoriasis symptoms are worse than others*; according to the National Psoriasis Foundation (NPF), cases can be qualified as:
Only a few patches, less than 3% of the skin surface area.
3% to 10% of the skin surface area.
More than 10% of the skin surface area.
*No universal definition of levels of severity. The above classification is according to the NPF.