The American College of Physicians (ACP) is a national organization of internists. Doctors of internal medicine focus on adult medicine and have had special study and training focusing on the prevention and treatment of adult diseases. The ACP provides information for patients and families on the organization's website, including information on diseases and conditions, end-of-life care, women's issues, and immunizations. The site also offers video news stories, health tips, special reports, and a link to the ACP diabetes webpage.

The American Headache Society Committee for Headache Education (ACHE) is a nonprofit partnership between health professionals and headache sufferers. ACHE provides resources and tools to health care professionals to help them help their headache patients. This website has many educational resources for doctors, patients, families, schools, and employers. Resources include newsletters, articles on headaches, tools for both patients and doctors, and lists of certified headache doctors.

This website is sponsored by the Nemours Foundation. It has a wide range of information about children's health, from allergies and diseases to normal growth and development (birth to adolescence). This website offers separate areas for kids, teens, and parents, each providing age-appropriate information that the child or parent can understand. You can sign up to get weekly emails about your area of interest.

The National Headache Foundation is a nonprofit organization dedicated to three major goals: educating the public that headaches are serious disorders and that sufferers need understanding and continuity of care; promoting research into potential headache causes and treatments; and serving as an information resource for sufferers, their families, and doctors who treat them. The NHF can provide lists of local doctors specializing in headache treatment. It also has a monthly newsletter and many pamphlets on a variety of topics related to the different headache syndromes.