Canker Sore (Aphthous Ulcer)
There are aphthous ulcers (canker sores) on the right of the image at the corner of the mouth, just below the…
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This page refers to diseases typically found around children's mouths. Viruses can cause blisters such as those seen in hand-foot-and-mouth disease or the cold sores from herpes simplex virus. The membranes in the mouth are sensitive to trauma, and harmless cysts filled with mucus (called mucoceles) can form, as well as ulcers or canker sores. Yeast infections (thrush) can also be present in the mouth since the membranes are moist and provide a favorable environment for infection to thrive. For more information about these diseases, click any image below.