TAC1 and COVID-19: The Neurokinin 1 receptor (NK1R) is a cellular receptor for the neuropeptide Substance P, and its dysregulation links to neuropsychological issues despite antipsychotic use.<h4>Objectives</h4>In the present study, neuropsychological sequelae related to long COVID-19 were screened and the expression of related neuropeptides and cytokines was evaluated.