Yeast infections are not sexually transmitted diseases (STDs), although they share many of the same symptoms, such as vaginal itching, burning, pain, and discharge.

Given the prevalence of STDs and yeast infections, it's not unreasonable for a woman to wonder if a yeast infection may increase her risk of other vaginal infections.

For the most part, though, yeast infections aren't associated with developing an STD.

However, by scratching to relieve vaginal itching, you may inadvertently create microscopic tears in the skin that allow bacteria or viruses that cause STDs to enter your body more easily.

HIV and Yeast Infections

Of particular concern is HIV/AIDS, which is often spread through sexual activity.

HIV/AIDS can also be transmitted through direct contact of bodily fluids with an open wound or a tear in the skin.

One study looked at women who were not HIV positive, but who were in a sexual relationship with someone who was.

Researchers found that the women who eventually contracted HIV were more likely to have had yeast infections.

They concluded that women in high-risk relationships should be taught how to prevent yeast infections — and to treat them quickly when they do occur — to decrease their risk of HIV infection.

Since yeast infections can irritate the vaginal lining even if you haven't been scratching, it's a good idea to use condoms if you plan to be sexually active while you have a yeast infection and don't know the HIV status of your partner.

Of course, this is good advice even when you don't have a yeast infection.

Safe Sex

There's no medical reason not to engage in safe sex when you have a yeast infection.

Keep in mind, however, that the vaginal itching and burning associated with yeast infections may make sex uncomfortable.

Another thing that might hinder you from having sex is the yeast infection treatment method you're using.

If you're using creams to treat your vaginal yeast infection, it's best to delay intercourse until the therapy is complete, as sex can essentially push the medication out of the vagina.

Certain vaginal creams may also be irritating to a man's penis.

In general, yeast infections aren't frequently spread from one partner to another during sex.

Even so, there are situations where it does happen.

Men and Yeast Infections

It's possible for men to get a yeast infection from a sex partner who also has an infection.

Although men don't usually develop penile discharge, it does appear that up to 15 percent of men may get an uncomfortable rash on their penis if they have unprotected sex with a woman who has a yeast infection.

The rate seems to be highest among men who are not circumcised.

In lesbian relationships, it's possible that yeast infections may be spread from one partner to another, although the issue has not yet been studied extensively.

If your partner (male or female) begins to experience any signs of a yeast infection, such as itching, burning, redness, or discharge, he or she should see a doctor to confirm the diagnosis and begin treatment.

Although yeast infections aren't dangerous for most people, they can cause discomfort such as vaginal itching and burning.

Decisions regarding sexual activity during a yeast infection ultimately depend on what you and your partner feel most comfortable doing.