Psoriasis is a skin disease that causes skin cells to multiply faster than usual (about ten times). It makes the skin accumulate into uneven red patches surrounded by white scales. They can develop anywhere, although some of the most common sites of occurrence are- scalp, knees, elbows, and lower back. Psoriasis is not infectious, which implies that a person with the condition cannot pass on the disease to others. Sometimes, it can happen between the members of the family. Psoriasis can occur at any age but generally happens in early adulthood years. the condition usually remains limited to some areas of the body. Although, in severe cases, it can extend to cover several parts of the body.