Patient's question:
The child is 1.5 years old. The tongue coating started to disappear locally after the child was around one year old, and then it progressed to the entire tongue coating disappearing, leaving the tongue red. After a period of time, the symptoms would naturally disappear, and the tongue coating would return to normal. However, the tongue coating would then start to disappear again from the tip and sides of the tongue. What kind of disease is this? How should it be treated? Thank you.Doctor's answer:
Hello, considering geographic tongue, "geographic tongue" is a circular lesion on the tongue surface that resembles a map. In reality, it is a superficial chronic erosive glossitis of the tongue mucosa. Due to its migratory characteristics, it is also called migratory glossitis.In the early stages of the disease, one or more grayish-white, slightly elevated, round or oval spots may appear on the tip of the tongue, the back of the tongue, or the edges of the tongue (occasionally seen on the lips, cheeks, or maxillary mucosa). Later, the grayish-white color gradually fades, leaving a red, thread-like desquamated area in the center. The surface is smooth and dry, with a 2–3 mm grayish-white or grayish-yellow slightly elevated tissue at the edges (keratinized and thickened filiform papillae). The lesion gradually expands outward, and the edges of adjacent lesions merge to form irregular arcuate patterns, resembling boundary lines on a map. The location and shape can change continuously, often shifting from one area to another within a day. During migration, the original lesion gradually heals, while new lesions appear or recur on newly repaired mucosa. Each episode lasts 3–4 days or longer, and in some cases, it may persist for several years.
This condition usually causes no obvious symptoms, but sometimes there may be itching, or mild discomfort or pain when eating irritating foods. Geographic tongue is more common in children, and its cause is still unclear. Some believe it is caused by inflammation, while others suggest it may be an allergic reaction. Clinically, there are no specific symptoms, but occasionally poor appetite may occur, and eating irritating foods like acidic or spicy ones may cause tongue pain. There is no specific treatment for this condition. Some children may improve after taking oral vitamin B supplements, while others show no effect. Recently, it has been found that some patients experience resolution of geographic tongue after using zinc supplements, so zinc supplements can be tried. However, in some children, the condition may recur after stopping the medication.