First I want to say that you should never be too embarassed to go to your doctor. By being too embarassed to go to your doctor you are opening up yourself to a whole world of problems. There are so many issues that people have that could be resolved earlier if they want to their doctor. I know... your anus is itching like crazy, and it's embarassing who ever has such a problem? Well it's not really uncommon. Doctors have seen everything you can imagine, and they are professionals who have all went through medical school They aren't going to laugh at you when you are having a health problem, instead what any good doctor will do is help you treat your problems so it doesn't come back.
Now with that said let's learn a little bit about the yeast. The yeast organism lives not only in your intestines, but in the mucous membranes throughout your body. This means that you could, theoretically, develop a yeast infection in your anus.
Those who have yeast infections impacting the anal area will likely experience itching, burning, and redness. Occasionally, the irritation may lead some bleeding from the anal area, as well as difficulty passing bowel movements. A lot of people confuse anal yeast infection symptoms with other digestive disorders, including hemorrhoids.
You’ll also want to make sure you do not have a yeast infection in the folds between your two glutes, in the “crack.” Don’t forget – yeast loves warm, dark, damp places like your underwear. It is possible to have a fungal skin irritation in the cracks of your skin and it could also be close to or confused with an anal yeast infection.
It's obviously hard to look at that area for a yeast infection, so the best thing to do is use two mirrors if you can. You can also try using your phone, but it may prove difficult. Yeast infections can be treated naturally through the use of a good diet and staying healthy. You may supplement with probiotics, antifungals, multivitamins as they certainly help in this day and age when nutrition isn't readily available to you. But no matter what you do, please try to properly diagnose your issue before attempting to treat yourself.