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.

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

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.

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.

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.

Moderated forum for SD patients and their families. Provided by the National Spasmodic Dysphonia Association.

Alternative therapy for voice disorders based on a psychological interpretation of the condition.