Psoriasis is a chronic autoimmune disease that affects the skin. It typically manifests as red, scaly patches on the skin. The exact cause of psoriasis is unknown, but it is believed to be caused by a combination of genetic and environmental factors.
There are several types of psoriasis, each with its own set of symptoms. The most common type, plaque psoriasis, typically appears as raised, red patches on the skin that are covered with white or silver scales.
Plaque psoriasis can occur anywhere on the body but is most commonly found on the scalp, knees, elbows, and lower back.
Guttate psoriasis is another common type of psoriasis that typically appears as small, red dots on the skin. This form of psoriasis is often triggered by a bacterial infection, such as strep throat. Guttate psoriasis can also occur on the scalp but is more likely to appear on the trunk, arms, and legs.
Inverse psoriasis appears as red patches on the skin that are not covered with scales. It is often found in the armpits, groin, and under the breasts. Inverse psoriasis can also occur on the genitals and in other skin folds.
Pustular psoriasis is a less common type of psoriasis that appears as white or yellow pustules on the skin. The pustules are filled with pus and can be painful and itchy. Pustular psoriasis can also cause fever, chills, and general body weakness.
Erythrodermic psoriasis is the least common type of psoriasis, but it is the most severe. It appears as a widespread redness on the skin that can be painful and itchy. Erythrodermic psoriasis can also cause fever, chills, and extreme body weakness.
There is no cure for psoriasis, but there are treatments available that can help to control the symptoms. The most common treatments are topical creams and ointments, phototherapy, and oral medications.