Toxic Shock Syndrome (Gynecologic)

Toxic shock syndrome (TSS) is a rapidly progressive, toxin-mediated illness rather than a problem confined to the vagina. It can occur when Staphylococcus aureus produces TSST-1 or when Group A Streptococcus produces pyrogenic exotoxins. In a gynecologic presentation, the suspected source may be a retained tampon, menstrual cup, contaminated dressing, genital tract infection, or nearby wound. These toxins act as superantigens. Instead of allowing antigen-presenting cells to activate only a small number of matching T cells, they link immune cells in an abnormal, broad pattern. The immune system’s alarm system is effectively triggered across many circuits at once. Massive T-cell activation and cytokine release then produce vasodilation, capillary leak, tissue inflammation, and sometimes myocardial depression. The circulation loses effective volume even when total body water has not yet fallen. Blood pressure drops, tissue perfusion deteriorates, and the kidneys, liver, lungs, brain, and coagulation system begin to fail. That mechanism explains why a patient can move from fever and vomiting to shock and multiorgan dysfunction within hours.