This analysis of data from the Auckland Regional Dental Service (ARDS) involved 213,957 children aged 3–12 years attending the ARDS for the first time who were free of rheumatic heart disease at baseline. Over a mean 5.1 years of follow-up, there were 440 hospital diagnoses of ARF or chronic rheumatic heart disease (CRHD). Children diagnosed with scabies during follow‐up were 23 times more likely to develop ARF or CRHD, compared with children who had no scabies diagnosis. This association persisted in a Cox regression analysis adjusting for potential confounders (adjusted HR 8.98; 95% CI, 6.33 to 20.2). When the analysis was restricted to children hospitalised at least once during follow‐up, the adjusted hazard ratio for the same comparison was 3.43 (95% CI, 1.85 to 6.37).