Twelve to 15 percent of men get an itchy rash on their penis if they have unprotected sex with a woman who has a yeast infection, suggesting that some level of infection can be passed to a male partner. Studies about the likelihood of infection between lesbian partners is inconclusive, but becoming infected this way appears to be a possibility.
Yeast infections are quite common and in most cases they are not serious.
More About Yeast Infection
Yeast infections can occur as a result of the use of antibiotics and birth control pills, stress, illness, pregnancy, poor eating habits, and even menstruation. The best way to diagnose a yeast infection is to visit the doctor although some women have them often enough that they are able to recognize the signs themselves. There are some over-the-counter creams or pills that can be used to treat a yeast infection. However, those are not recommended for those who have never had a yeast infection before, are pregnant, or have had more than four yeast infections in a year; these cases require a doctor.