The Anxiety Disorders Association of America (ADAA) works to improve the lives of people who have anxiety disorders. Members of the association are people who have or are interested in anxiety disorders as well as health professionals who conduct research and treat people with anxiety disorders.

The National Alliance on Mental Illness is a national self-help and family advocacy organization dedicated solely to improving the lives of people with severe mental illnesses such as schizophrenia, bipolar disorder (manic depression), major depression, obsessive-Compulsive Disorder, and panic disorder. NAMI focuses on support, education, advocacy, and research. The mission of the organization is to "eradicate mental illness and improve the quality of life of those affected by these diseases."

The National Institute of Mental Health (NIMH) provides information to help people better understand mental health, mental disorders, and behavioral problems. NIMH does not provide referrals to mental health professionals or treatment for mental health problems.