President Donald Trump and members of his Cabinet are slated to announce on Monday afternoon a link between Tylenol use during pregnancy and autism diagnoses, leaving patients concerned about their options to treat fever and pain during pregnancy.

The announcement comes as a culmination of the long-term goal of Health and Human Services Secretary Robert F. Kennedy Jr., who promised in the spring that his department would identify environmental factors that have led to an explosion of autism spectrum disorder diagnoses in the past 30 years.