Hikikomori: a possible mental health consequence of the COVID-19 epidemic

The COVID-19 pandemic forced prolonged social distancing between people. This, among other mental disorders and mental health consequences, highlights a specific psychiatric phenomenon: the hikikomori condition. The hikikomori is a phenomenon of persistent and extreme social withdrawal. The condition's established diagnostic set of criteria is not yet to be found in diagnostic manuals classifying mental disorders. Little is known about the exact mechanism of its development, but some authors see a close link between its emergence and the rise of the internet. Typically, the individual gradually withdraws into a voluntary isolation as a result of a socially humiliating or unfavourable situation. Although the outside world is not completely irrelevant to them, they tend to follow online the events of the world and they also keep in touch with others mostly online in order to avoid retraumatization. The COVID-19 pandemic, particularly in relation to the rise of online lifestyles as a consequence of lockdowns, has contributed significantly to the more and more frequent use of the internet, while real social contact has been inevitably reduced. This constellation can be seen as a major risk factor for hikikomori, which in the long term could be an unanticipated complication of the pandemic, especially in adolescents and young adults.