Psoriasis is a common skin condition that causes skin redness and irritation. Most persons with psoriasis have thick, red skin with flaky, silver-white patches called scales.

Guttate psoriasis is a skin condition in which small, red, teardrop-shaped spots appear on the arms, legs, and middle of the body. Guttate means "drop" in Latin.

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Psoriatic arthritis is an arthritis that is often associated with psoriasis of the skin. Psoriasis is a common, chronic skin condition that causes red patches on the body. About 1 in 20 people with ps

Skin redness or inflammation; Skin lesion; Rubor; Skin rash; Erythema A simple rash is called dermatitis, meaning inflammation of the skin. Contact dermatitis is caused by things your skin touches, su

Rheumatoid arthritis (RA) is a long-term disease that leads to inflammation of the joints and surrounding tissues. It can also affect other organs. The cause of RA is unknown. It is considered an auto

Reactive arthritis is a group of inflammatory conditions that involves the joints, urethra, and eyes. There may also be sores (lesions) on the skin and mucus membranes.

Pityriasis rosea is a common type of skin rash seen in young adults. Pityriasis rosea is believed to be caused by a virus. It occurs most often in the fall and spring. Although pityriasis rosea may oc