Morphological features in children with autism spectrum disorders: a matched case-control study.

Doctors compared kids with autism to matched peers. They looked for 48 small body differences like ear shape or finger length. Each child got a full exam to count every anomaly.

Kids with autism had many more of these tiny features. The study found positive results: the autism group showed the 48 anomalies far more often.

Angkustsiri et al. (2011) saw the same thing the same year. They used photos instead of hands-on exams and still found more anomalies in autistic kids.

Handleman et al. (1980) first spotted this link 30 years earlier. Their small study compared autistic kids to siblings and also saw more anomalies.

Lifshitz et al. (2014) went further. They showed that kids with more dysmorphic features also had lower language and motor scores.

Flor et al. (2017) used the same idea to split autism into "complex" and "essential" groups. Complex cases had more medical issues and lower skills.

You can do a quick anomaly scan in your intake. Note ears, fingers, hairline, and head size. High counts flag a "complex" subtype who may need deeper medical workup and tighter care plans.