Broken down by gender, it's a common but rare occurrence. But, men can and do get yeast (candida) infections
Which is why it is sometimes considered an STD for men. We get them by having unprotected sex. And it's becoming more common. And common to pass it back and forth ad infinitum should partners not get treatment at the same time.
The symptoms are an irritation and/or soreness of the glans, white patches of skin on the shaft or head.And it can itch like crazy. If it descends into the urethra - a man is likely to wish his cock would fall off. Untreated, it can lead to Balinitis - an severe inflammation of the cockhead. Male yeast infections are easily treated with an OTC anti-fungal cream. So, why a man would ever allow his cock to get this bad before seeking medical attention is beyond me.
Oral yeast infections, called Thrush,
can be contracted via oral sex.
not skinning it back to wash the head every day, which, chances are, will lead to a boner...
But, big deal. If it happens, take some time to enjoy it.
Keep your cock healthy, guys.
It's most like the only one you'll get.
Oh, and don't forget to cum today.