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Covid tongue

Date: 10 March 2021 Tags: Miscellaneous


A Covid symptoms study app has identified a phenomenon known as Covid tongue to be a new symptom of Covid-19.



A large number of people submit their symptoms to the app that allows the app to identify new variety of symptoms associated with the disease.



  • Covid tongue is a form of inflammation disorder that usually is seen on the top and sides of the tongue.

  • Individuals suffering from covid symptoms will have tongue with bald, red area of different sizes that is surrounded by an irregular white border. 

  • The affected areas on tongue can change quickly in size and shape similar to continental drift and hence the disease is also called Geographic Tongue (GT).

  • The conditions for Geographic Tongue are not known and it is assumed that the condition can occur anytime during our lifetime.

  • Factors such as emotional stress, psychological factors, habits, allergies, diabetes and hormonal disturbances are said to be behind this condition.


Relations with covid-19

  • There are assumptions that GT could be associated with high levels of Cytokine protein that is responsible for cytokine storm.

  • The tongue also has large expression of ACE2 receptor that the spike protein of the SARS-CoV-2 virus binds while infecting cells.


Lesser known symptoms of Covid-19

  • Covid toe cases were identified from Spain and the US. The condition causes purple, blue or red discolouration of the toes.

  • Some long term symptoms of covid-19 are fatigue, shortness of breath, cough, joint pain and chest pain.

  • Kawasaki disease symptoms of high fever and swollen arteries are also commonly reported among covid-19 patients.

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