DEAR DOCTOR K: I saw a warning about toxic shock syndrome on a box of tampons. What is it, and what does it have to do with tampon use?
DEAR READER: Toxic shock syndrome (TSS) is a rare, life-threatening illness triggered by certain bacteria. The two bacteria most often involved are streptococci ("strep") and staphylococci ("staph"). The cases caused by streptococci tend to be the most severe. In TSS, toxins (poisons) produced by these bacteria cause a severe drop in blood pressure that can lead to organ failure.