If you have questions about various disease areas and treatments, you can find valuable information at the following sites:

Central Nervous System

Addiction
Alcohol Answers
American Society of Addiction Medicine (ASAM)
Faces and Voices of Recovery (FAVOR)
Join Together
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
National Institute on Drug Abuse (NIDA)


Mental Health 
American Psychiatric Association (APA)
National Alliance of Mental Illness (NAMI)
National Institute of Mental Health (NIMH)
National Mental Health Association


Pain
American Chronic Pain Association
National Pain Foundation
American Pain Foundation


Autoimmune Disorders
The Arthritis Foundation
National Institute of Arthritis and Musculoskeletal and Skin Diseases
Cleveland Clinic Department of Rheumatic and Immunologic Diseases


Diabetes
American Diabetes Association (ADA)
National Diabetes Education Program (NDEP)
National Diabetes Information Clearinghouse (NDIC)