Perineal care involves washing the genital and rectal areas of the body. It should be done at least once a day during bed bath, shower, or tub bath. It is done more often when a patient is incontinent. This prevents infection, odors and irritation.What is perineal care in nursing? Peri-care—also known as perineal care—involves cleaning the private areas of a patient. Because this area is prone to infection, it must be cleaned at least daily, and more if your loved one suffers from incontinence