Ancestry of pink disease (infantile acrodynia) identified as a risk factor for autism spectrum disorders.
Level 4 - case-series / case-control
Survey-based observational study comparing descendants of a clinical cohort to published general population reference rates.
PubMed 21797771 · doi:10.1080/15287394.2011.590097
What was done
Five hundred and twenty-two individuals with a historical diagnosis of pink disease (infantile acrodynia, linked to idiosyncratic mercury sensitivity) completed a survey reporting the health outcomes of their descendants. Reported rates of autism spectrum disorder (ASD) and other childhood conditions (ADHD, epilepsy, Fragile X syndrome, and Down syndrome) were compared against published general population prevalence benchmarks.
What was found
The reported prevalence of ASD among the grandchildren of pink disease survivors was 1 in 22, compared to an external general population rate of 1 in 160. The abstract did not provide numerical data or comparative statistics for the other evaluated conditions.
Why it matters
The study suggests a possible transgenerational link between ancestral idiosyncratic sensitivity to mercury toxicity and elevated ASD risk in descendants.
Limits
The study relied on self-reported survey responses from survivors without independent clinical or medical record verification. Outcomes were compared against external historical population estimates rather than an internal, matched control cohort, introducing substantial risks of selection bias, recall bias, and unadjusted confounding. Biological mercury sensitivity and genetic factors were not directly measured.
Cited by
- context In the 1930s and 1940s, infant teething powders containing mercury caused a syndrome that resembles autism.