Related Experiment Video
Updated: Aug 29, 2025

Author Spotlight: Repetitive Transcranial Magnetic Stimulation Combined with Movement Observation in Cerebral Palsy
Published on: August 9, 2024
A Case of Priapism in a Child With Autism Spectrum Disorder, Possibly Due to Risperidone Treatment With Addition of
Ömer Faruk Bulut1, Yaşar Tanir
1Child and Adolescent Psychiatry Department, İstanbul University, Istanbul Medical Faculty, Istanbul, Turkey.
Objectives:
Risperidone is an effective drug used for the treatment of irritability in children with autism spectrum disorder (ASD). Atomoxetine (ATX) is a well-tolerated drug used in first-line therapy in children with attention-deficit/hyperactivity disorder (ADHD). However, uncommon adverse effects of risperidone and ATX are a concern among mental health professionals. To our knowledge, this is the first case report of priapism after addition of ATX upon existing treatment with risperidone.
Methods:
Written informed consent for publication was obtained from the patient and his parents, and their identities were concealed for ethical reasons.
Results:
Here, we report a case of priapism as an adverse effect of ATX and risperidone treatment in a 7-year-old boy with ASD and comorbid ADHD. In this case, priapism was not observed with risperidone until ATX was added.
Conclusions:
Priapism is a condition viewed as a medical emergency. Although risperidone-induced priapism is a rare phenomenon, it is advised for clinicians to consider the drug interactions in treatment of ASD and ADHD in terms of early diagnosis and intervention.
Related Concept Videos
Autism Spectrum Disorder
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Modeling in Therapy
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Drug Therapy
Antianxiety Medications
Parkinson's Disease: Treatment
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...

