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[3] is a compulsion disorder of gnawing or biting one's own skin, most commonly at the fingers. This action can either be conscious or unconscious [4] and it is considered to be a type of pica. Those affected with dermatophagia typically bite the skin around the nails, leading to bleeding and discoloration over time.
Nail biting may have an association with oral problems, such as gingival injury, and malocclusion of the anterior teeth. [2] [6] It can also transfer pinworms or bacteria buried under the surface of the nail from the anus region to the mouth. [2] If the bitten-off nails are swallowed, stomach problems can occasionally develop. [6]
Paronychia is an inflammation of the skin around the nail, which can occur suddenly (acute), when it is usually due to the bacterium Staphylococcus aureus, or gradually (chronic) when it is commonly caused by Candida albicans. [2] The term is from Greek: παρωνυχία from para, "around", onyx, "nail" and the noun suffix -ia. [7] [8]
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The problem doesn't stop at nails, either. Habitual nail-biters often chomp on the skin around their fingers, too, leaving open cuts and abrasions that could easily pick up even more bacteria or ...
Using gloves: creating a physical barrier between human fingers and mouth prevents the individual from biting their skin. However, this may cause skin to heat up which provide discomfort. [4] Sensitization: Sensitize yourself to when autophagia occurs. Attempt engaging in a reverse behavior, such as flexing your toes or clenching your fist. [4]
The term "cheilocandidiasis" describes exfoliative (flaking) lesions of the lips and the skin around the lips, and is caused by a superficial candidal infection due to chronic lip licking. [14] Less severe cases occur during cold, dry weather, and is a form of chapped lips. Individuals may lick their lips in an attempt to provide a temporary ...
Perioral dermatitis, also known as periorificial dermatitis, is a common type of inflammatory skin rash. [2] Symptoms include multiple small (1–2 mm) bumps and blisters sometimes with background redness and scale, localized to the skin around the mouth and nostrils. Less commonly, the eyes and genitalia may be involved. [3]