Effectiveness of Pelvic Floor Muscle Rehabilitation Combined With Desmopressin in Children With Primary Monosymptomatic Nocturnal Enuresis

The aim of this randomized controlled trial is to evaluate the effects of Structured Pelvic Floor Muscle Rehabilitation (SPFMR) in children with Primary Monosymptomatic Nocturnal Enuresis (PMNE) who are undergoing desmopressin asetat (DDAVP) treatment prescribed by a pediatric urologist. The study aims to investigate whether SPFMR can reduce the frequency and severity of enuresis episodes and whether it can also reduce relapse rates in the short- and long-term follow-up. The main questions the study seeks to answer are: * Does SPFMR reduce the frequency and severity of enuresis episodes in children with PMNE? * Does SPFMR treatment reduce relapse rates in children with PMNE in the long term? Researchers will compare the group receiving SPFMR in addition to DDAVP treatment with a control group receiving only DDAVP treatment. This comparison will help evaluate the effect of SPFMR on the severity of enuresis episodes and relapse rates. Participants will: * Receive DDAVP treatment (SPFMR group and Control group) * Participate in SPFMR sessions ( SPFMR group) * Keep a diary of enuresis frequency and severity * Assess relapse during short- and long-term follow-up The hypotheses of the study are: H0: Adding SPFMR to desmopressin treatment for children with PMNE has no short-term effect on the severity of enuresis episodes. H1: Adding SPFMR to desmopressin treatment for children with PMNE has a short-term effect on the severity of enuresis episodes. H0: Adding SPFMR to desmopressin treatment for children with PMNE has no long-term effect on the severity of enuresis episodes. H2: Adding SPFMR to desmopressin treatment for children with PMNE has a long-term effect on the severity of enuresis episodes.