National Association for the Dually Diagnosed
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The National Association for the Dually Diagnosed (NADD) is a non-profit membership organisation founded in 1983 by Dr Robert Fletcher.[1] It provided services and advocation for people who have a dual diagnosis of mental health disorders and developmental disabilities.[2][3]
Among other publications, the NADD produces the Diagnostic Manual for Intellectual Disability,[4] which has become an important resource for mental health clinicians.[5] It also hosts an annual international congress on dual diagnosis.[6]