Blue waffle disease is not a real sexually transmitted infection (STI).
It added to the confusion by describing real symptoms that occur with actual STIs.
Fake claims about blue waffle disease continue to float around the internet.
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Some people even claimed that blue waffle disease could eventually turn a female’s body blue if left unchecked.
Can Anything Cause a Blue Vagina?
The only condition vaguely associated with bluish vaginal color iscervical endometriosis.
While vaginitis can occur with STIs, there are also non-infectious causes that have nothing to do with sex.
This chart shows how the symptoms of blue waffle disease compare to symptoms of real STIs.
How to Get Screened for Real STIs
STI screenings are essential parts of primary care.
To find a testing site near you, use theSTI testing site locatoroffered by the CDC.
you’re free to even search for clinics that offer free or low-cost testing.
If STI test results are negative, you could take precautions to keep yourself safe.
If your results are positive, you’re free to seek treatment and avoid infecting others.
The CDC and Planned Parenthood, among others, offer educational materials about sex and STIs.
These resources are available in English and Spanish.
Summary
Blue waffle disease does not exist.
It is not an STI, and your genitals will not turn blue if you have sex.
Symptoms like these could be a sign of an STI in need of testing and treatment.
doi.org/10.7326/W17-0027
Centers for Disease Control and Prevention.Sexually Transmitted Infections.
New York Daily News.New Jersey councilwoman victimized by ‘blue waffle disease’ April Fool’s prank.
Centers for Disease Control and Prevention.Getting tested for STIs.
American Sexual Health Association.Are Young People Abandoning Condoms?
2025 Mar;54(3):859-871. doi:10.1007/s10508-024-02998-z
