Painful, red, or cracked corners of the mouth can be uncomfortable and frustrating. Eating, smiling, or even talking may cause irritation. If your doctor’s appointment is still a few days away, you may be wondering what you can safely do in the meantime to ease the discomfort.
This common issue is often linked to a condition called angular cheilitis, which causes inflammation and cracks at the corners of the lips. While a healthcare professional should evaluate persistent symptoms, there are simple steps that may help reduce irritation and support healing temporarily.
Let’s explore the possible causes and what you can do until you get medical advice.
Why the Corners of the Mouth Become Red and Sore
Several factors can lead to irritation in this area.
Common causes include:
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Dry or cracked lips
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Frequent licking of the lips
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Fungal or bacterial infections
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Vitamin deficiencies (such as B vitamins or iron)
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Saliva collecting in the corners of the mouth
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Cold weather or dry air
When saliva repeatedly wets the corners of the lips, the skin may soften and crack. This creates an environment where fungus or bacteria can grow, making the irritation worse.
Signs of Angular Cheilitis
The symptoms often appear on one or both corners of the mouth and may include:
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Redness or swelling
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Cracked or split skin
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Burning or stinging sensation
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Small sores or crusting
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Pain when opening the mouth
If the area becomes very swollen, produces pus, or spreads, it’s important to seek medical attention sooner if possible.
