**3.3 Bladder and bowel diary**

The bladder diary is a crucial diagnostic and therapeutic instrument for children with voiding disorders. After the anamnesis and physical examination, this is the third most important part of the evaluation. It is used to understand and quantify the function of the bladder at home, because the memory of the elements of voiding is unreliable. A complete bladder diary is kept for 7 nights and urinary incontinence is registered, as well as nocturnal urine volume, in order to evaluate nocturnal enuresis [4].

The 48 hr. daytime frequency and volume chart is kept for 48 hours, preferably on weekends for practical reasons [4]. The data obtained are frequency of voiding, volume of individual urination, maximum voided volume, urine production, nocturia, nocturnal urine production and fluid intake. The frequency of voiding in children with DV is variable.

A bowel diary is kept for 7 days to rule out the presence of constipation [4]. The frequency of defecation, the appearance of the stool according to the Bristol scale, pain and tension during defecation, whether the child has previously delayed defecation and whether fecal incontinence is present are entered.
