Why is the inside of your mouth peeling?

Quite a common symptom of many conditions, peeling in the mouth can be a painful and inconvenient experience. Peeling inside of the mouth, on the roof and back of the throat, as well as the skin in the inner lips can be indicative of an auto-immune condition, a nutrient deficiency, bad eating habits and even an allergic reaction.

Others have experienced peeling of the skin inside the mouth after taking certain oral medications.

Which auto-immune diseases can cause this?

The phrase ‘auto-immune’ describes the condition where the body’s immune system attacks its own host, i.e. your own body. It can mistake part of your body, like your joints or skin, as foreign. It releases proteins called autoantibodies that attack healthy cells, explains Health Line.

Auto-immune diseases that can cause peeling skin inside of the mouth are Discoid Lupus Erythematosus (also referred to as DLE, Rheumatic Skin Disease, and Oral Lichen Planus. All these diseases are known to cause oral lesions.


Malnutrition happens when humans do not consume enough healthy, nutrient dense food. We all have a daily recommended allowance for the vitamins, minerals and calories we take. If we consistently fall short of these needed nutrients, we run the risk of becoming malnourished, which can be devastating to one’s health.

According to the Journal of Clinical and Diagnostic Research: “Malnutrition may alter the homeostasis, which can lead to disease progression of the oral cavity, reduce the resistance to the microbial biofilm and reduce the capacity of tissue healing. It may even affect the development of the oral cavity.”


Mouth sores and oral skin peeling can also be a result of poor dental hygiene. The mouth is wet and warm enough to be the perfect breeding ground for germs. Make a habit of brushing, flossing and rinsing your mouth with warm salt water three or four times a day, preferably a few minutes after meals.

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