A 47-Year-Old Japanese Woman with Symptoms of Increased Salty and Reduced Sweet Taste Perception Preceding a Diagnosis of Thymoma-Associated Myasthenia Gravis

Immunosuppressive treatment for myasthenia gravis crises improve the taste disorder in patients with thymoma: two case reports

“…They reported that loss of sweet taste in the patient has recovered after immunosuppressive and surgical treatment. Similarly, Kimura et al reported a 47-year-old female with MG and thymoma accompanied by taste dysgeusia, including reduced perception of sweet taste and increased perception of salty taste, which was not recovered after surgery for thymoma but improved after immunosuppressive treatment for MG ( 2 ). A multi-institutional study by Kabasawa et al showed that taste disorders associated with MG were observed in 9 out of 371 (2.4%) patients with MG ( 4 ).…”

“…Moreover, they are associated with many neurological diseases, including myasthenia gravis (MG). In previous case reports, taste disorders were reported in MG patients with ( 1 , 2 ) or without thymoma ( 3 ).…”

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“…In depression, hypogeusia and gustatory hallucinations have been reported, whereas in those with schizophrenia, gustatory hallucinations and gustatism have been described [3]. True hypergeusia, In particular to sweet or salt, has been noted in myriad illnesses, including small cell carcinoma of the lung several other forms of cancers, including breast-14.5%, gastrointestinal-14.2%, lung-10.8%, solid tumors-15.2%, hematologic diseases-14.7% after tongue base resection from obstructive sleep apnea cancer chemotherapy cisplatin-induced bitter hypergeusia hypogeusia induced disinhibition in sweet hypergeusia Myasthenia Gravis induced salt hypergeusia and head trauma induced lipid ageusia and salty hypergeusia [4][5][6][7][8][9][10][11]. While delusional or subjective hypersomnia has been described after COVID-19 infection delusional hypergeusia has not heretofore been reported.…”