The National Institute of Neurological Disorders and Stroke (NINDS), a part of the National Institutes of Health, is the leading U.S. federal government agency supporting research on brain and nervous system disorders. It provides the public with educational materials and information about these disorders.

The American Academy of Ophthalmology (AAO) is an association of medical eye doctors. It provides general information and brochures on eye conditions and diseases and low-vision resources and services. The AAO is not able to answer questions about specific medical problems or conditions.

This national nonprofit health agency is dedicated to curing autoimmune diseases and relieving the suffering and the economic and social impact of autoimmune diseases. AARDA brings professionals together in the areas of education, research, and patient services, and sponsors physicians' conferences, research, legislative advocacy, and a national awareness campaign.

The American College of Rheumatology (ACR) and the Association of Rheumatology Health Professionals (ARHP, a division of ACR) are professional organizations of rheumatologists and associated health professionals who are dedicated to healing, preventing disability from, and curing the many types of arthritis and related disabling and sometimes fatal disorders of the joints, muscles, and bones. Members of the ACR are physicians; members of the ARHP include research scientists, nurses, physical and occupational therapists, psychologists, and social workers. Both the ACR and the ARHP provide professional education for their members.

The ACR Web site offers patient information fact sheets about rheumatic diseases, about medicines used to treat rheumatic diseases, and about care professionals.

As part of the U.S. National Institutes of Health, the National Eye Institute provides information on eye diseases and vision research. Publications are available to the public at no charge. The Web site includes links to various information resources.

This clinic conducts basic and clinical research on salivary function and Sjögren’s syndrome and is located in the Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research (NIDCR), National Institutes of Health (NIH) in Bethesda, Maryland.

This nonprofit foundation educates both health professionals and people with Sjögren's syndrome about the disease. It also produces and distributes educational materials, including the Moisture Seekers newsletter, handbooks, videos, and medical articles. A network of chapters, support groups, and contacts organizes meetings, participates in health fairs, increases awareness in their community, and promotes local media campaigns. The foundation sponsors educational programs, symposia, and workshops; provides physician and dentist referrals; and advocates for research and treatment centers.