what is the real cause of vomiting? a case report of a 6-year-old child with risperidone poisoning

Background: risperidone is an atypical antipsychotic commonly prescribed for attention deficit hyperactivity disorder (adhd) in children. an overdose can lead to significant gastrointestinal, cardiovascular, and neurological complications.case presentation: we report a case of a 6-year-old boy with adhd who inadvertently received a full tablet of risperidone every 8 hours instead of the prescribed 1/8 tablet daily. he presented to the pediatric emergency department with lethargy, shortness of breath, and chest pain after the third dose. upon examination, he was unconscious but had stable vital signs. initial management consisted of supportive treatment, monitoring vital signs, and fluid therapy.clinical course: after 24 hours, the child regained consciousness but he developed persistent nausea and vomiting, occurring five times at half-hour intervals. further evaluation, including an abdominal ultrasound, revealed ileocolic intussusception. the condition was successfully treated with an enema reduction, and the child was subsequently discharged in good health.discussion: the vomiting in this case was likely multifactorial, stemming from risperidone’s side effects and the occurrence of intussusception, a rare but serious complication. this case underscores the importance of careful dosing education for caregivers and vigilance in monitoring for gastrointestinal complications in pediatric patients after medication overdose.conclusion: prompt recognition and management of the complications arising from medication errors are crucial for ensuring positive outcomes in pediatric patients. further education for parents and healthcare providers about medication dosages and potential side effects is warranted to prevent similar incidents.