Psoriasis is a disease that develops when the immune system sends out faulty signals to the body to speed up skin cell growth and reproduction. The five main types of psoriasis are plague, guttate, inverse, pustular, and erythrodermic.
Plaque psoriasis is the most common form of the disease. In plaque psoriasis, skin accumulates in particular sites on the body, resulting in inflamed patches of silvery, scaly skin. These patches frequently appear on the elbows and knees, but are also known to appear on the scalp, palms of hands, and even the genitals.
Erythrodermic psoriasis involves more widespread plaque patches that are inflamed, itchy, and very painful. This form of psoriasis can be fatal because, in severe cases, it disrupts the body’s ability to regulate temperature and makes the skin very susceptible to bacteria and infection.
Pustular psoriasis appears as raised, pus-filled bumps on the skin. The surrounding skin is very red and tender. These pus-filled bumps can appear all over the body, but are sometimes localized to the hands and feet.
Guttate psoriasis manifests itself as numerous, small, scaly, reddish, teardrop-shaped lesions on the skin. This type of psoriasis is often preceded by a strep throat infection.
Inverse psoriasis occurs in skin folds like the genitals, armpits, under the breasts, or in between excess fat folds. Smooth patches of inflamed skin appear and are aggravated by friction and sweat. This type of psoriasis is especially vulnerable to fungal infections.
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