FIGURE 1.

SARS‐CoV‐2 confirmed cases with oral mucosa findings. (a) A 47‐year‐old woman with a maculopapular rash on admission developed erosions under the tongue and ulcers in the oral mucosa 3 days after diagnosing COVID‐19. (b) A 78‐year‐old man developed herpetiform ulcers unresponsive to valacyclovir on the tongue 10 days after diagnosis. Herpes simplex type I IgM was negative, and IgG was positive with a low titer, and herpes simplex type II IgM and IgG were negative (c). A 53‐year‐old woman developed a red, edematous painful tongue 4 days after PCR and chest CT confirmation of COVID‐19. (d) A 25‐year‐old woman with fever and a maculopapular rash developed cracked lips and erosions on the buccal mucosa. Herpes simplex type I and II antibodies were negative, and repeated SARS‐CoV‐2 PCR was positive on the 7th day of admission