case_images: PMC11144004_01
case_images: The clinical condition of the patient at the first visit: (A) serosanguinolent crusts on the lips, an erosive area on the right corner of the mouth that tended to bleed; (B-I) white ulcers with yellowish edges, irregular in shape, and varied in sizes on the labial, buccal, lateral, and ventral mucosa of the tongue, and the floor of the mouth.
case_images: IMCRJ-17-535-g0001.jpg
case_images: PMC11144004_01_IMCRJ-17-535-g0001.jpg
case_images: f0001
case_images: Extraoral examination showed no lesions on other parts of the body, while the lips of the patient had serosanguineous crusts and an erosive area at the corner of the mouth (Figure 1A), and tended to bleed. Intraoral examination revealed white ulcers with yellowish edges, irregular, varying sizes, and pain on the labial, buccal, lateral, and ventral mucosa of the tongue and floor of the mouth (Figure 1B-I). 
case_images: The clinical condition of the patient at the second visit (7 days of therapy): (A and B) the lips of the patient and the upper labial mucosa were healing; (C-I) lower labial mucosa, buccal mucosa, lateral and ventral tongue, and floor of the mouth had undergone improvement.
case_images: IMCRJ-17-535-g0002.jpg
case_images: PMC11144004_01_IMCRJ-17-535-g0002.jpg
case_images: f0002
case_images: The control was carried out after a week following therapy and showed that oral condition had improved (Figure 2A-I).