In August, the U.S. Food and Drug Administration (FDA) notified healthcare professionals and patients that acetaminophen has been associated with a risk of rare but serious skin reactions. Acetaminophen is commonly used to treat pain and reduce fever; it is included in many prescription and over-the-counter (OTC) products. These reactions, known as Stevens-Johnson syndrome, toxic epidermal necrolysis, and acute generalized exanthematous pustulosis, can be fatal and can occur with first-time use or at any time it is taken. This new information resulted from a review of the FDA Adverse Event Reporting System database and the medical literature to evaluate cases of serious skin reactions associated with acetaminophen. It is difficult to determine how frequently these reactions occur, due to the widespread use of the drug, differences in usage among individuals (e.g., occasional vs. long-term use), and the length of time that the drug has been on the market; however, it is likely that these events occur rarely.
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