Viruses are abundant, and several have been found to infect the CNS, resulting in neuropsychiatric disorders affecting the cognitive, emotional, behavioural, and perceptual domains. As the pandemic of the disease now known as COVID-19 has progressed, the psychological ramifications of the sickness have become more widely recognized. The present COVID-19 pandemic could have psychological effects for numerous causes. Certain situations, such as pervasive anxiety, social isolation, stress in health-care employees and other social workers, unemployment, and financial troubles, may make both infected and non-infected people vulnerable. Furthermore, psychological distress was found to be adversely linked with suggested health behaviours to reduce infection risk and favourably associated with non-recommended behaviours in quarantine conditions. The purpose of this research is to review the available information about the psychological and neuropsychiatric long-term effects of COVID-19. According to the existing literature, the COVID-19 pandemic has a significant negative influence on mental health, particularly in older persons with and without dementia. Viral infection, as well as the social isolation that follows in order to prevent it from spreading, has a variety of neuropsychiatric repercussions. To clarify such impacts and assess the long-term ramifications for the mental health of older persons, as well as explore alternative mitigating techniques, larger and more robustly designed research studies are needed.