Doctors frequently diagnose yeast infections without using a microscope, but an infection that looks like yeast with the naked eye could be desquamative vaginitis (a severe and rare form of vaginitis) or trichomoniasis. And doctors aren’t the only ones to blame. "Seventy percent of women who treat themselves for yeast infections don’t have them," says Marjorie Green, MD, director of the Mount Auburn Female Sexual Medicine Center in Cambridge, Mass., and a clinical instructor at Harvard Medical School.
Another theory holds that a major cause of vulvodynia is excessive and improper use of anti-yeast medications.
Sexual health problems can be difficult to diagnoseeven for the experts. "If it was easy, I wouldn’t need to spend an hour and 15 minutes [with new patients]," says Andrew Goldstein, MD, an associate professor at George Washington University. "This stuff is hard!"