Fortunately, angular cheilitis is nothing to worry about and is easily treated. Typically, either a fungal infection (the top culprit is Candida) or a bacterial infection like Streptococcus is the ...

Secondary infection is common with angular cheilitis. This includes infection with the fungus Candida albicans (which causes oral thrush and yeast infections) or the bacteria Staphylococcus aureus ...