Neurological Post-Acute Sequelae of COVID-19 in Non-Hospitalized Patients: An Integrative Review

The COVID-19 pandemic has had a significant impact on the global population. The infection, caused by SARS-CoV-2, presents with a variety of clinical manifestations, from asymptomatic cases to more severe forms, including a variety of neurological symptoms, such as fatigue, weakness, brain fog, paresthesias, dysautonomia, anosmia, and dysgeusia. Additionally, the disease is associated with the long COVID syndrome, in which there is persistence of the effects and symptoms of the acute phase. In recent years the literature has shown relevant data on long COVID, but there is still a need to deepen the knowledge about these long term manifestations. Thus, the present study aimed to describe the main neurological sequelae resulting from SARS-CoV-2 infection in non-hospitalized population during the long phase of the disease, gathering scientific evidence through an integrative review of the prevalence of symptoms, patient profile, duration and severity of sequelae, risk factors, comorbidities, and possible nervous system structural damage. The PubMed/Medline database was used with descriptors and, at the end of the screening process with predefined inclusion and exclusion criteria, 22 studies were included. A group of neurological symptoms associated with long COVID was identified: myalgia, dysgeusia, memory alterations, olfactory dysfunction, dizziness, and pain. Most patients presented multiple symptoms that lasted for more than one year with a significant impact on quality of life. The main risk factors were dyslipidemia, age, ethnicity, muscle/ joint pain, and sex. This review highlights the importance of further studies on the syndrome, its etiology, diagnosis, follow-up, and treatments.