When plaque psoriasis symptoms appear, many patients assume that they're experiencing an allergic reaction or temporary rash. However, plaque psoriasis is a chronic condition that requires treatment to reduce flare-ups and improve the patient's quality of life. Anyone who exhibits one or more of these symptoms should talk to their doctor.
Patches on Knees and Elbows

Plaque psoriasis patients develop patches on their knees and elbows. If they've spent time outdoors, they might assume that they had an allergic reaction. However, the rashes keep appearing long after they should have run their course. Scales and dry, flaky skin might accompany the patches, making the patient uncomfortable all day.