It is natural for a parent to want to comfort a child, and for a child with a fever, this used to mean giving them aspirin. When this was discovered to sometimes cause the deadly brain and liver swelling known as Reyes Syndrome, recommendations were changed to Acetaminophen, marketed under many names, most famously, Tylenol. Duke University surgeon William Parker believes that this is not as safe as widely believed, and can cause ADHD and Autism. David discusses the evidence for this theory with William, and they also discuss alternatives to drugs in the case of fevers.
An informal article by Dr. Parker on this issue is here: http://www.greenmedinfo.com/blog/tylenol-damages-brains-children-research-reveals
A scientific paper on the same subject is here: https://journals.sagepub.com/doi/full/10.1177/0300060517693423