“A disturbing new study has linked a common chemical found in head lice treatments to behavioral difficulties in children.”
According to Yahoo’s report on Pyrethroids, there is a correlation with using lice treatments and neurodevelopmental damage. Although, there is a correlation, the research which was published in the journal Occupational & Environmental Medicine, does not state that Pyrethroid use causes neurodevelopmental damage. Correlation and causation don’t always agree, but correlation is enough evidence to deter most parents from using Pyrethroid treatments.
Check out the rest of the article here “New Study Links Head Lice Treatments to Abnormal Behavior in Children”