Medically reviewed by Marisa Garshick, MD Psoriasis is a chronic (long-term) inflammatory condition that causes red, itchy ...

Many are not as lucky as Joel and have severe skin lesions or plaque on very visible or large areas of the body. Plaques form when immune system T-cells go awry and trigger skin cells called ...

Blood cultures were negative. The primary skin lesions are erythematous plaques with violaceous borders measuring up to 10 cm, and there are centrally located papulovesicles (see Figure 1).

Description of Skin Lesions: This 49-year-old female had a 9-month history of smooth, slightly erythematous papules arranged in annular plaques on the dorsal aspects of both hands (see Figure 1).