The Merck manual containing detailed description of most diseases. Medical conditions (Diseases, Disorders, Illness, Symptoms, Syndromes, Medical. en. wikipedia. org/wiki/Disease. Discover symptoms, treatment options, and support for the common and rare. Circulation Diseases (25) Dental Conditions (27) Depressive Disorders (103). dir. yahoo. com/Health/Diseases_and_Conditions -. National Center for Immunization and Respiratory Diseases. National Center for Preparedness, Detection, and Control of Infectious Diseases. www. cdc. gov/DiseasesConditions -. National Center for Infectious Diseases (NCID) has been officially reorganized:. topic information, please consult the CDC Diseases and Conditions A-Z Index. www. cdc. gov/ncidod/diseases/index. htm -. Voluntary health organizations dedicated to providing information on the prevention, treatment, and cure of rare "orphan diseases. www. rarediseases. org -. var saImage = new Image(); saImage. onload = function() &ob;if(this. height. Diseases, Disorders and Related Topics. www. mic. ki. se/Diseases/index. html www. mic. ki. se/Diseases/index. html. National Institute of Allergy and Infectious Diseases Home Page. www. niaid. nih. gov/. var wikiImage = new Image(); wikiImage. onload = function() &ob;if(this. height A disease is an abnormal condition of an organism that impairs bodily functions, associated with specific symptoms and signs. In human beings,"disease" is often used more broadly to refer to any condi. en. wikipedia. org/wiki/Disease. Patient focused site covering over 400 conditions and diseases, more than 100 tests and procedures, and a medical dictionary of over 6500 terms. Original content provided from a network of over 40 doctors. www. medicinenet. com/. Resources on diseases, disorders and chronic illness, including medical news, information, articles, community message forums and chat rooms, email, books, newsletter, directory of related web sites and more. Diseases & Conditions. www. healingwell. com/.