Females are most likely to obtain yeast infections (genital yeast infections) as well as develop signs. Most yeast infections occur when yeast, (Yeast infection albicans, mainly) that are normally present on the body, develop problems that enable the yeast to multiply and produce symptoms. In ladies, a genital yeast infection may simulate STDs while in guys, a yeast infection of the urethra and/or foreskin may seem like a STD. Without treatment, syphilis bacteria may spread, leading to major interior body organ damages as well as fatality years after the original infection.