The Anxiety Disorders Association of America (ADAA) works to improve the lives of people who have anxiety disorders. Members of the association are not only people who have or are interested in anxiety disorders but also health professionals who do research and treat people who have anxiety disorders.

Mental Health America (formerly known as the National Mental Health Association) is a nonprofit agency devoted to help people of all ages live mentally healthier lives. Its Web site has information about mental health conditions. It also addresses issues such as grief, stress, bullying, and more. It includes a confidential depression screening test for anyone who would like to take it. The short test may help you decide whether your symptoms are related to depression.

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.