Unexpected cause of repeated peritoneal dialysis-related complications: a case study of autism spectrum disorder with normal intelligence quotient in an adolescent

Background Autism spectrum disorder (ASD) is a common communication disorder, with an incidence rate of 3%. In most cases, clinicians can diagnose ASD in a single outpatient visit. However, in the case of ASD patients without intellectual disability, clinicians are sometimes unaware for a prolonged period that a patient has ASD. In such cases, delayed diagnosis can lead to serious complications. Case presentation An 18-year-old boy had repeated severe complications of peritoneal dialysis. At the age of 9, the patient presented with proteinuria, and 5 years later, he developed end-stage kidney disease. Percutaneous renal biopsy and the clinical symptoms revealed focal segmental glomerulosclerosis with Charcot-Marie-Tooth disease due to a gene mutation in INF2 . Peritoneal dialysis was initiated at the age of 14, but led to many related complications, including peritonitis, hypertensive retinopathy and encephalopathy, and acute heart failure. Initially, we were unaware of his developmental characteristics and autism spectrum disorder without intellectual disability, but through lengthy observations by various healthcare professionals, his unique characteristics were noticed. Because the patient often displayed a discrepancy between behavior and speech, we cautiously studied his thoughts and behaviors, and developed a special approach to ensure safe peritoneal dialysis. Conclusions When many peritoneal dialysis-related complications occur in a patient with normal intelligence quotient, autism spectrum disorder should be considered as a possible cause.