The National Spasmodic Dysphonia Association (NSDA) is a not-for-profit 501c(3) organization dedicated to advancing medical research into the causes of and treatments for SD, promoting physician and public awareness of the disorder, and providing support to those affected by SD through symposiums, support groups, and on-line resources.

The NSDA is comprised of people with SD, healthcare professionals, volunteers, friends, and families. It is the only organization dedicated solely to the SD community. Together, we continue to grow through awareness, advocacy, and outreach; help to improve the lives of people dealing with SD; and work to support research in order to bring understanding to this disorder.

National Spasmodic Dysphonia Association
300 Park Boulevard
Suite 335 
Itasca, IL 60143 
Phone: 800-795-6732 
Fax: 630-250-4505