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Psoriasis Symptoms and Signs
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Plaque psoriasis (psoriasis vulgaris), the most common form, usually produces plaques of red, raised, scaly skin affecting the scalp, elbows, and knees. The plaques may itch or burn.
Plaque psoriasis on the elbow. Image courtesy of Hon Pak, MD.
The flare-ups can last for weeks or months. Psoriasis can spontaneously resolve only to return later.
Plaque psoriasis. Image courtesy of Hon Pak, MD.
The skin in these areas, especially when over joints or on the palms or feet, can split and bleed.
Plaque psoriasis with fissures, which are splits in the skin. Fissures usually occur where the skin bends (joints). The skin may bleed and is more susceptible to infection. Image courtesy of Hon Pak, MD.
Plaques sometimes have an area around them that looks like a halo or ring (Ring of Woronoff) that is especially noticeable after effective treatment as the lesions are resolving.
Psoriasis of the scalp. Image courtesy of Hon Pak, MD.
Nail psoriasis. Note the classic pits and yellowish color in the nails. Image courtesy of Hon Pak, MD.
Psoriasis on the palms. Image courtesy of Hon Pak, MD.
Medically Reviewed by a Doctor on 11/30/2015
Jeffrey J. Meffert, MD
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