Studies also suggest that oral bacteria and the inflammation associated with periodontitis â a severe form of gum disease â might play a role in some diseases. In addition, certain diseases, such as diabetes and HIV/AIDS, can lower the body's resistance to infection, making oral health problems more severe.
Common fungal skin infections are caused by yeasts (such as Candidaâsee Candidiasis) or dermatophytes, such as Epidermophyton, Microsporum, and Trichophyton (see Overview of Dermatophytoses (Ringworm, Tinea)). Many such fungi live only in the topmost layer of the epidermis (stratum corneum) and do not penetrate deeper.
Different types of fungus cause a variety of fungal infections: Athleteâs foot, jock itch, and ringworm are caused by a fungus called tinea. Most yeast infections, such as vaginal thrush, oral thrush, and fungal gastroenteritis, are caused by a fungus called Candida albicans.