Although the sores of angular cheilitis may become infected by the fungus Candida albicans (thrush), or other pathogens, studies have linked the initial onset of angular cheilitis with nutritional deficiencies, namely riboflavin (vitamin B2) and iron deficiency anemia, which in turn may be evidence of poor diets or malnutrition (e.g. celiac disease). Zinc deficiency has also been associated with angular cheilitis. Angular cheilitis can also be a sign of anorexia nervosa and/or bulimia nervosa due both to malnutrition and as a side effect of constant vomiting.
Cheilosis may also be part of a group of symptoms (upper esophageal web, iron deficiency anemia, glossitis, and cheilosis) defining the condition called Plummer-Vinson syndrome (aka Paterson-Brown-Kelly syndrome).
Angular cheilitis occurs frequently in the elderly population who experience a loss of vertical dimension due to loss of teeth, thus allowing for over-closure of the mouth.
Less severe cases occur when it is quite cold (such as in the winter time), and is widely known as having chapped lips. Individuals may lick their lips in an attempt to provide a temporary moment of relief, only serving to worsen the condition.
Angular cheilitis can be caused by bacteria, but is more commonly a fungal infection. It can also be caused by medications which dry the skin, including isotretinoin (Accutane), an analog of vitamin A. Less commonly, it is associated with primary hypervitaminosis A, which can occur when large amounts of liver (including cod liver oil and other fish oils) are regularly consumed or as a result from an excess intake of vitamin A in the form of vitamin supplements.
Treatment of angular cheilitis varies depending on the cause.
For minor cases caused by bacterial infection, applying a topical Antibiotic to the area for several days is sufficient to treat the infection and heal the lesions. Minor cases caused by a fungal infection can be treated by over-the-counter antifungal creams (e.g. clotrimazole).
my personal opinion is that the sentence ''Although the sores of angular cheilitis may become infected by the fungus Candida albicans (thrush), or other pathogens, studies have linked the initial onset of angular cheilitis with nutritional deficiencies'' is the key of your problem.
if there is a bacteria fungus and all this stuff this is probably because of a week immune system and the cause of that is the nutritional deficiencies- and the cause of that is the source of the problem,which might be some gastro problem.
i think that the best immediate thing that you can do is to check all the nutrients that the wiki mentioned in related to this condition(go to the doc with the wiki page printed if needed, so he won't just push you some anti something that normal body wouldnt need cause it could kill that on its own)
in my opiniom theres a cahnce that similar mechanism is what makes ec.