Medical disorders among inpatients with autism in Denmark according to ICD-8: a nationwide register-based study.

Danish doctors read every hospital chart for 244 inpatients who had an autism code. They wrote down any extra medical diagnoses listed in the charts.

Next they picked 244 kids without autism who were the same age and sex. They compared how often each group had other medical problems.

Only one problem showed up more in the autism group: congenital malformations. These are birth defects like heart holes or cleft palate.

All other medical disorders stayed at the same low rate in both groups. Only about 12 out of every 100 kids with autism had any extra medical diagnosis at all.

Pan et al. (2021) pooled 97 studies and found lots of neurological problems in autism. Their big picture seems to clash with the Danish result. The gap is method: Pei-Yin counted epilepsy, migraine, and macrocephaly that show up later, while the Danish study only looked at hospital-chart diagnoses that were already written down.

Kielinen et al. (2004) did almost the same chart review in a different country and got the same 12 percent rate. Two matching numbers from two registries make the low rate look real.

Sparaci et al. (2015) went deeper into birth defects and still found the same link. They showed the risk is strongest when autism and intellectual disability occur together.

You can relax a little. Most kids with autism do not carry a hidden list of serious medical illnesses. Still, keep an eye out for congenital malformations, especially in clients who also have intellectual disability. When you see them, mention the higher autism risk to the medical team and document any follow-up plans.