Psoriasis is a skin condition that causes cells to build up rapidly on the surface of the skin. This leads to the formation of red, itchy, and scaly patches, known as plaques. In simple terms, it’s like the body’s skin cell production is on fast-forward, causing an accumulation of cells that results in visible patches on the skin. While it’s not contagious, it can be chronic and may come and go over time. The exact cause is not fully understood, but it’s believed to involve a combination of genetic and environmental factors.