Toxic Shock Syndrome (TSS) is a serious and potentially fatal illness caused by toxin-producing strains of staphylococcus aureus bacterium.
Symptoms can include: High fever, diarrhea, vomiting, fainting or rash during your period or shortly after. If you experience any of the above symptoms, remove your menstrual cup and contact your doctor immediately.
TSS has been linked to the high absorbency and prolonged use of tampons but it can affect menstruating as well as non-menstruating people. Using a menstrual cup does not exclude you from TSS risk.
Although the occurrence of TSS is rare, we recommend for you to remain cautious and strictly follow the instructions for use to reduce your risk:
For more info please check: http://www.toxicshock.com