What is Psoriasis? Psoriasis is not a simple rash, but a disease that can become painful and debilitating and affects the development of daily activities. It is caused by the malfunctioning of the immune system that causes an excess production of skin cells, the ones in charge of replenishing the skin layers, in confirming renewal. This excess reaches a level of substitution up to seven times higher than normal, giving rise to the characteristic plaques of the disease, which take the form of highlighted red spots covered with desquamation. In addition, excess cell production also results in the infiltration of white blood cells (T cells) into the skin. The lesions are usually located in the trunk, elbows, knees, scalp and groin. For very dry skin. Package of 220 grs.