In developed countries, there are well documented mental health impacts of HIV/AIDS and patients’ quality of life. Acquiring HIV/AIDS can be a serious psychological trauma and can predispose a person to different mental disorders. Co-occurring mental illness complicates diagnosis, help-seeking, quality of care provided, treatment outcomes and adherence. However, in Ethiopia, studies about mental health problems in HIV/AIDS treatment settings are limited. | Prevalence and associated factors of common mental disorders among adult patients attending HIV follow up service in Harar town, Eastern Ethiopia: A crosssectional study