In a cross-sectional, descriptive, and case control study, a sample of 1261 primary schoolchildren, aged 6 to 10 years, was randomly chosen for the purpose of assessing the prevalence of nocturnal enuresis (NE) and its correlation with psychological, developmental, organic, and socioeconomic factors. Self-administered questionnaires were used, and 1041 of the forms were retrieved. The prevalence of NE was 97 per 1000 schoolchildren, with a male to female ratio of 1:1.3. There was a statistically significant correlation between NE and excessive drinking before retiring to bed, a deep sleep pattern, delay in speech acquisition, and tension habits. Restriction of fluid intake before retiring to bed was considered the best method to avoid bedwetting by parents of enuretics. Parents of nonenuretics ranked urination before going to bed first. Only 14% of the bedwetters' parents had sought medical or psychiatric help for their child and only 3% of the nonenuretics' parents indicated they would seek such assistance if their child were an enuretic. The prevalence of NE in the community merits the serious attention of both educational and health care delivery personnel.HN Al-Naqeeb, MK Ahmed, GAA Al-Othman, SM Bakaya, I Helin, Epidemiology and Parental Perception of Nocturnal Enuresis in Arab Schoolchildren. 1990; 10(5): 544-548 Nocturnal enuresis (NE) is a common and bothersome problem for children as well as their parents. When defined as bedwetting that occurs at least once a month, its prevalence in the Western countries is between 13 and 21% among 5-year-old children.1,2 If defined in terms of occurring at least once a week, the prevalence is between 6 and 7%.1,3 Being a symptom and not a disease, its origin is multifactorial. Genetic factors, bladder function, psychological stress, psychiatric illness, and depth of sleep are some etiological mechanisms to be considered, along with organic causes like urinary tract infections and abnormalities. 4 Little is known regarding the attitudes of parents toward the problem of bedwetting in their children, even though it may adversely affect the parent-child relationship. Information regarding the parental perception of NE may guide physicians in better dealing with the problem.The aim of this study was to describe some aspects of the epidemiology of NE in an unselected population of Arab schoolchildren. In addition to the prevalence and sex distribution, we have analyzed the importance of psychological and behavioral factors, the relationship between NE and developmental delay, and the occurrence of NE as related to delayed toilet training. The significance of a positive family history and the association between NE and socioeconomic factors is examined, including a detailed analysis of the parental perception of the problem.