Candida infections of the mouth, throat, and esophagus
About. Candidiasis is an infection caused by a yeast (a type of fungus) called Candida.Candida normally lives on the skin and inside the body, in places such as the mouth, throat, gut, and vagina, without causing any problems. 1 Sometimes, Candida can multiply and cause an infection if the environment inside the mouth, throat, or esophagus changes in a way that encourages fungal growth.