Painful ear infections is one hypothetical source of disruption to the nervous system, it's possible, probably, that other extremely painful experiences during

Painful ear infections is one hypothetical source of disruption to the nervous system, it's possible, probably, that other extremely painful experiences during childhood - when there's rapid nervous system development - could also impact/block development - cause development delays or reduction in capability or hyper/hypo-sensitivities. But yes, it can be comforting to know there are more options out there to explore.