The COVID-19 pandemic has affected people's mental health all over the world. The pandemic has led to widespread feelings of anxiety, depression, and post-traumatic stress disorder symptoms. According to the UN health agency WHO, in the first year of the COVID-19 pandemic, prevalence of common mental health conditions, such as depression and anxiety, went up by more than 25 percent.
The pandemic has damaged social relationships, trust in institutions and in other people, has caused changes in work and income, and has imposed a substantial burden of anxiety and worry on the population. Women and young people face the greatest risk of depression and anxiety.
According to The Centers for Disease Control and Prevention study of Mental Health, Substance Use, and Suicidal Ideation During the COVID-19 Pandemic, "63 percent of young people reported experiencing substantial symptoms of anxiety and depression."
COVID-19 triggered issues caused by substance use disorders (SUDs). The pandemic disproportionately affects people with SUDs. The health consequences of SUDs (for example, cardiovascular diseases, respiratory diseases, type 2 diabetes, immunosuppression and central nervous system depression, and psychiatric disorders), and the associated environmental challenges (such as housing instability, unemployment, and criminal justice involvement), are associated with an increased risk for contracting COVID-19.
Confinement rules, along with unemployment and austerity measures implemented during and after the pandemic period, can significantly affect the illicit drug market and alter patterns of drug use among consumers.
Mitigation measures (i.e. physical distancing, quarantine, and isolation) can worsen loneliness, mental health symptoms, withdrawal symptoms, and psychological trauma.
Chronology of events December 2019: Wuhan, China, reports the first instances of pneumonia with an unclear cause. People get anxious and afraid as a result of their initial lack of knowledge about the infection.
On January 30, 2020, the COVID-19 pandemic is deemed a Public Health Emergency of International Concern by the World Health Organization (WHO). The public and healthcare professionals experience higher levels of anxiety as a result of increased worldwide knowledge. The WHO formally designates COVID-19 a pandemic on March 11, 2020. Reports of anxiety and sadness rise as a result of widespread panic and terror.
March 2020: Lockdowns and social distancing measures are implemented in several nations. Social isolation aggravates pre-existing mental health issues and adds to feelings of loneliness.
April 2020: Research indicates a sharp increase in mental health problems, including a considerable rise in feelings of anxiety and sadness on a global scale. As more individuals look for help, the need for mental health services rises.
According to the CDC, 40% of American people suffer from substance abuse or mental health problems as of May 2020.
June 2020: As the epidemic strikes, racial injustice demonstrations take place in several areas. For many people, the combined pressures of societal upheaval and COVID-19 intensify trauma and anxiety.
November 2020: According to preliminary statistics, PTSD, anxiety, and depression are more common among healthcare professionals. More support services are advocated for when the mental health costs of frontline workers are acknowledged.
Global vaccination efforts start in January 2021. Although vaccination campaigns offer optimism, some people experience vaccine reluctance and related stress as a result.
June 2021: Many people are experiencing "post-pandemic" stress, according to reports, and mental health problems continue even after lockdowns end. Long-term mental health care and rehabilitation techniques become the main focus.
2022 and Beyond: Research into the pandemic's long-term psychological impacts, such as "long COVID" and its affects on mental health, is still ongoing. Constant research emphasizes the necessity of long-term mental health care and prevention strategies.
Predictors and potential causes of mental health symptoms
The known causes of mental health issues during the pandemic included fear of infection, stigma associated with infection, isolation (imposed by individuals sheltering on their own or in compliance with lockdowns), and masks. Billions of people shifted to remote work, temporary unemployment, homeschooling or distance education, and lack of physical contact with family members, friends and colleagues.
Some socio-demographic characteristics were also identified as risk factors such as age, female sex, lower educational attainment, lower income, or pre-existing mental health conditions, pre-existing other chronic diseases (comorbidities) and living alone or with children.
Unknowns As the pandemic began, the risks were uncertain. As sick people flooded into hospitals and official advice evolved, the lack of information increased stress and anxiety. Many uncertainties surrounded the beginning of the pandemic, including estimating infection risk, symptom overlap between COVID-19 and other health problems. COVID-19 also caused many mental health problems. Patients experienced unfavorable psychological effects such as post-traumatic stress symptoms, disorientation, and rage when exposed to COVID-19.
Lack of preparation During the first wave of the epidemic, critical supplies were quickly exhausted. The most prominent items were personal protective equipment (PPE) for hospital workers and ventilators for treatment. At the onset of the pandemic in early 2020, a national survey found that many medical facilities were running out of PPE supplies, including one third of the surveyed medical facilities reporting being out of face masks and a quarter reporting a shortage or almost shortage of gowns. Another study reported that 63.3% of nurses agreed with the statement, "I am worried about inadequate personal protective equipment for healthcare personnel (PPE)".
Stigma As the pandemic began, anyone who interacted with infected people had to address the possibility that they might have been infected themselves and might therefore present an unknown risk to their family and others. In some cases, they were initially stigmatized.
Isolation Many care homes subjected their residents to enforced isolation. They were locked into their rooms around the clock, including at mealtimes when their meals were delivered to their doors. Visitors were not allowed, nor was any socialization among the residents.
Powerlessness Nurses worked longer hours during the pandemic, which increased anxiety in many. Many patients rapidly progressed once in the hospital to the ICU and ultimately, death. The absence of approved therapeutics meant that palliative care (supplemental oxygen, ventilators and extracorporeal membrane oxygenation) were the only options. In some cases, this stimulated frustration and a sense of powerlessness.
Disruption Those caring for COVID-19 patients were subject strict biosecurity measures, consigned to wearing gowns, uncomfortable masks and face shields at work. After returning home, many changed clothes before entering and isolated themselves, in an attempt to protect their families. Their jobs demanded constant awareness and vigilance, reduced their autonomy, reduced access to social support, reduced self-care, uncertainty about the effects of long-term exposure to COVID-19 patients, and fear of infecting others.
Cognitive symptoms and "brain fog" Beyond mood disorders, the pandemic was associated with measurable impacts on cognitive function, commonly referred to as "brain fog." A major community-based study published in The New England Journal of Medicine in 2024 evaluating over 112,000 participants found that individuals who had recovered from COVID-19 showed persistent, small-to-moderate deficits in cognitive performance—particularly in memory, reasoning, and executive function—compared to uninfected controls. Cognitive deficits were most pronounced in individuals who had experienced severe initial illness, required hospitalization, or developed persistent Long COVID symptoms, though mild deficits were also observed following mild, resolved infections.
In some jurisdictions, schools were closed during the early months of the pandemic. Such closures increased anxiety, loneliness, stress, sadness, frustration, indiscipline, and hyperactivity among children.
Prevention and management
The Guidelines on Mental Health and Psychosocial Support of the Inter-Agency Standing Committee of the United Nations recommends that mental health support during an emergency "do no harm, promote human rights and equality, use participatory approaches, build on existing resources and capacities, adopt multi-layered interventions and work with integrated support systems."
One author suggested implementing habits that act as "psychological PPE". These habits include healthy eating, healthy coping mechanisms, and practicing mindfulness and relaxation methods.
Another method that many companies followed for their employees was to provide the employees with specific mental health improvement programs in order to increase the morale of the employees and improve their mental health.
World Health Organization and Centers for Disease Control guidelines WHO and CDC issued guidelines for minimizing mental health issues during the pandemic. The summarized guidelines are:
For general population Be empathetic to affected individuals. Use people-first language while describing infected individuals. (for example, instead of saying "a schizophrenic person, say "a person with schizophrenia"). Minimize watching the news to reduce anxiety. Seek information only from trusted sources, preferably once or twice a day. Protect yourself and be supportive to others. Amplify positive stories of local infected people. Honor healthcare workers who are caring for those with COVID-19. Implement positive thinking. Engage in hobbies. Avoid negative coping strategies, such as avoidance of crowds and pandemic news coverage.
For healthcare workers What are health care workers experiencing? Feeling pressure is normal in a crisis. Mental health is as important as physical health. Nurses face higher rates of fatigue, sleep problems, depressive disorders, PTSD, and anxiety. Personal Protective Equipment shortages leaving nurses feeling unsafe. Frontline health care works experience higher levels of stress Nurses expressed elevated stress. Hands-on patient care increased risk perception. Vaccinated nurses were less fatigued than others. Nurses working with infected patients faced more anxiety, depression, and distress. Non-frontline nurses exhibited less depression. What actions can healthcare workers take? Adopt coping strategies, get sufficient rest, eat healthy food, be physically active, and avoid tobacco, alcohol, and drugs. Stay connected with loved ones, including digitally. Use understandable ways to share messages with people with disabilities. Know how to link people with available resources. Online counseling can reduce the risk of insomnia, anxiety, and depression/burnout.
For team leaders in health facilities Focus on long-term occupational capacity rather than short term results. Ensure good quality communication and accurate updates. Ensure that staff are aware of mental health resources. Orient staff on how to provide psychological first aid to the affected. Ensure that mental health emergencies are managed in healthcare facilities. Ensure availability of essential psychiatric medications at all levels of health care. Offset feelings of anxiety and depression using strong leadership and clear, honest, and open communication. Use widespread screening to identify workers in need of mental health support. Provide organizational support Facilitate peer support. Rotate work schedules to mitigate stress.