What Causes Vaginal Smell? 14 Possible Causes You Should Know

Toxic Shock Syndrome

Toxic shock syndrome is a serious, potentially life-threatening complication of certain bacterial infections. Although toxic shock syndrome is commonly associated with tampon use in young women, it can also occur in women of all ages. 

Toxic shock syndrome is characterized by a sudden onset of fever, rash, and vomiting and can progress to include low blood pressure, seizures, and kidney failure. One lesser known but significant effect of toxic shock syndrome is a change in vaginal odor.

The bacteria that cause toxic shock syndrome produce toxins that enter the bloodstream and cause widespread inflammation. This inflammation can affect the entire reproductive system, including the vagina. When this happens, the normally acidic environment of the vagina is disrupted, which can lead to an overgrowth of harmful bacteria and yeast. This overgrowth can cause a distinct change in vaginal odor that may be foul-smelling or fishy. Other symptoms like itching, burning, and irritation often accompany the change in odor.

Women with toxic shock syndrome will likely be prescribed antibiotics to help clear the infection. They may also recommend over-the-counter treatments like probiotics or antifungals to help restore the normal pH balance of the vagina and prevent recurring infections.