Every child—at one time or another—has most likely wet his or her bed. Although it is a common occurrence for many young children, once a child turns 6, potty training should be complete and thus bed wetting no longer an occurrence. For some children, a problem known as enuresis occurs. Enuresis is a medical condition which means consistently wetting the bed, or wetting oneself in places other than the toilet (past what is considered to be the normal age). There are two types of enuresis: nocturnal enuresis is the passage of urine during nighttime sleep, while diurnal enuresis is wetting the clothes during the day. Children past age 6 who continue to wet their bed at night, or who wet their clothes consistently for more than three months, should be checked by their physician for enuresis. Behavioral therapy is the preferred method to treat enuresis allowing many children to be able to control their bladders and urination during the nighttime and daytime.