Most common mental health disorders
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Overview of Most Common Mental Health Disorders
Common mental health disorders (CMDs) are widespread across all age groups and regions, significantly impacting individuals and society through disability, lost productivity, and increased healthcare costs Raguram2019Weich1997Steel2014. These disorders are frequently encountered in community and primary care settings and often present with both emotional and physical symptoms Raguram2019Risal2012.
Types of Common Mental Health Disorders
Depression and Anxiety Disorders
Depression and anxiety are consistently identified as the most prevalent mental health disorders worldwide. These include major depressive disorder, generalized anxiety disorder, panic disorder, phobic disorders, and mixed anxiety and depression Raguram2019Weich1997Steel2014+3 MORE. Depression and anxiety together affect between 15% and 30% of the community at any given time, with women experiencing higher rates of mood and anxiety disorders compared to men Weich1997Steel2014Sinha2020.
Other Common Disorders
Other frequently reported CMDs include adjustment disorder, dissociative disorder, somatoform disorders, obsessive-compulsive disorder (OCD), and post-traumatic stress disorder (PTSD) Raguram2019Hardy2018. Somatic symptoms, such as headaches, fatigue, and sleep problems, are also common presentations, especially in primary care Raguram2019Risal2012Silva2025.
Substance Use Disorders
Substance use disorders are also classified among common mental disorders, with men showing higher prevalence rates than women .
Prevalence Across Age Groups
Adolescents
Among adolescents, the global prevalence of CMDs is estimated to be between 25% and 31%, with girls being more affected than boys . This highlights the importance of early screening and intervention in this age group.
Young and Middle-Aged Adults
Young and middle-aged adults are particularly vulnerable to CMDs due to various genetic, psychological, and social factors. Depression and anxiety remain the most common disorders in these groups .
Older Adults
Older adults also experience significant rates of CMDs, particularly depressive disorders, which are more prevalent in this group compared to younger adults. Anxiety disorders, especially specific phobias and agoraphobia, are also common among older adults .
Impact and Public Health Significance
CMDs are associated with substantial disability, impairments in physical and social functioning, and increased mortality rates. They account for a large proportion of days lost from work and healthcare consultations, with significant economic costs due to lost productivity Weich1997Steel2014Silva2025. Co-morbidity among CMDs is high, further increasing the burden on individuals and health systems Raguram2019Silva2025.
Conclusion
Depression, anxiety disorders, and related conditions are the most common mental health disorders globally, affecting people of all ages and backgrounds. These disorders are highly prevalent, often co-occur, and have a profound impact on individuals and society. Early identification, effective treatment, and integration of mental health care into primary care settings are essential steps to address the widespread burden of common mental health disorders Raguram2019Weich1997Steel2014+4 MORE.
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