What are the most common symptoms associated with psoriasis?

What are the most common symptoms associated with psoriasis?

Rebecca Fitzgerald (Dermatologist) gives expert video advice on: How is psoriasis diagnosed by a dermatologist?; How can I prevent psoriasis flare-ups? and more...

The most common symptom of psoriasis is the formation of patches on the skin that seem to show up out of absolutely nowhere. You just wake up one morning and all of a sudden you have red patches on your back, your knees or your elbows and you don't really know where it came from. Occasionally these psoriasis patches can burn or itch.