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A 12-year-old boy presented with a 4-year history of non-painful lower lip enlargement and perioral erythema, without gastrointestinal symptoms. Physical examination revealed vesicles, pustules, scales and crusts along all over the lower lip (figure 1). There was no evidence of lingua plicata …
Competing interests None.
Patient consent Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
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