PMC8397571_01
(a-f) Tongue feature changes along four weeks of follow-up. Week one (a, b): (a) visit 1 showing white coated tongue with prominent papillae; (b) visit 2 showing increased tongue coat thickness over the dorsal lateral aspects with prominent papillae. Week two (c, d): (c) visit 3 showing case stability from visit 2; (d) visit 4 showing improvement with restoration of the normal tongue coating and papillary features. Weeks three and four (e, f) showing further improvement than the previous weeks with normal tongue coating and papillae.
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fig1
Bilateral indentation marks from reported continuous tongue sucking were also noted (Figure 1(a)). Follow-up appointments were scheduled at short intervals (one to two visits per week throughout four weeks) to monitor manifestation improvement (Figures 1(a)-1(f)).
Timeline of the patient's symptoms throughout four weeks of post-acute COVID-19 syndrome.
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fig2
A detailed documentation of the changes in all manifestations of PCS is shown as a timeline in Figure 2.