Male fungal infections in the private parts are usually caused by a fungus called Candida, which is a type of yeast. Candida is normally present in small amounts in the body, but an overgrowth of it can lead to a yeast infection. A moist environment is ideal for Candida to spread, so factors that increase the risk of developing a fungal infection include not cleaning the genitals or bathing regularly, wearing wet clothing or tight-fitting underwear, using skin products or soaps that cause skin irritation, having diabetes, and being uncircumcised. Having sex with a partner who has a vaginal yeast infection without using a condom can also cause a penile yeast infection. Other risk factors include using antibiotics long term, using lubricated condoms, and having obesity. One of the potential complications of a penile yeast infection is balanitis, which is an inflammation of the head of the penis. To prevent fungal infections, it is recommended to keep the genitals clean and dry, wear loose-fitting cotton underwear, and avoid using sprays, soaps, oils, disinfectants, shower gels, or deodorants around the affected area. If you suspect you have a fungal infection, it is important to seek medical help to get an accurate diagnosis and appropriate treatment.