Toxic shock syndrome is a rare illness. It's caused by poisons from strep or staph bacteria. Usually these bacteria cause an infection that can be treated easily. But sometimes they cause a serious reaction that can make your organs fail. This can include your lungs, kidneys, and liver.
This illness sometimes happens when a tampon is kept in too long. You can also get it after you get chickenpox, the flu, or skin wounds.
Toxic shock syndrome needs treatment right away in a hospital.