ASHA: Spasmodic Dysphonia - A consumer-oriented SD primer, focusing on the characteristics, diagnosis, and treatment of the condition. Published by the American Speech-Language-Hearing Association.

Dextromethorphan to Treat Patients with Voice Spasms - A Maryland-based clinical study comparing the effects of dextromethorphan, lorazepam, and placebo in individuals with spasmodic dysphonia, muscular tension dysphonia, or vocal tremor. Background and participation details are offered by the National Library of Medicine's ClinicalTrials.gov site.

Dystonia Ireland: Spasmodic Dysphonia - A primer on SD, presented by Dystonia Ireland -- a Dublin- based charity supporting patients and families affected by forms of dystonia.

eMedicine - Spasmodic Dysphonia - Peer-reviewed article on the medical and surgical management of SD, co-authored by Darius Bliznikas, MD and Soly Baredes, MD.

I Have Spasmodic Dysphonia - Lani Estepa's personal story, accompanied by links to SD support organizations.

Johns Hopkins Center for Laryngeal and Voice Disorders: Spasmodic Dysphonia - Symptoms and treatment of spasmodic dysphonia, enhanced by Quicktime movies of vocal cords before and after Botox therapy for adductor SD.

National Spasmodic Dysphonia Association - Resources for patients and professionals, including multimedia demonstrations of SD, descriptions of available therapies, information on a financial-assistance program for patients who require Botox, and listings for dystonia specialists, support groups, and upcoming events.

Neurological Concomitants in Spasmodic Dysphonia - Review of neurological conditions that may accompany Spasmodic Dysphonia, with background information on the differential diagnosis and treatment of SD. Authored by Lyn Dee Harrelson of New Mexico State University's Communication Disorders Program.

New York Eye & Ear Infirmary: Spasmodic Dysphonia - Fact sheets dedicated to SD and its treatment, accompanied by pointers to research reports and information concerning a related clinical trial that is being conducted at the Infirmary.

NIDCD Health Information: Spasmodic Dysphonia - Answers to frequently asked SD questions, offered by the National Institute on Deafness and Other Communication Disorders (a division of the National Institutes of Health).

NORD: Spasmodic Dysphonia - Abstracted version of a report from National Organization for Rare Disorders database. Features include a general description of SD, listings for support organizations, a link to information on the Botox assistance program administered by NORD, and an opportunity to purchase the full-text report.

PMDI - Information concerning SD treatment and support-group meetings at the Parkinson's and Movement Disorders Institute of Orange County, California.

Spasmodic Dysphonia - From the Baylor Grand Rounds Archive, a review of SD diagnosis and treatment, featuring historical perspectives and a case presentation.

Spasmodic Dysphonia : A New Surgical Treatment - Case report describing Dr. Nobuhiko Isshiki's Midline Type 2 Thyroplasty technique for SD.

Spasmodic Dysphonia Bulletin Board - Moderated forum for SD patients and their families. Provided by the Dystonia Medical Research Foundation.

Spasmodic Dysphonia Exercises and Background - Supportive resource, created and maintained by an individual who has had SD for more than 10 years. Personal perspectives on recovery are featured.

Spasmodic Dysphonia Support on the Internet - Offering a supportive e-mail list and directory of Web-based resources for individuals affected by SD.