In the WHO South-East Asia Region, epidemiological knowledge of mental health conditions remains a relative unknown, given the sparsity of data and information on (a) the total burden associated with each disorder; (b) the degree of met and unmet needs for treatment and interventions; and (c) the patterns and costs of treatment. This is a common situation in other regions of the world, where the global descriptive epidemiology of the Global Burden of Disease (GBD) study is mainly used in association with the WHO Global Health Estimates (GHE) to quantify, at the very least, the total burden associated with mental health conditions.