A disease is an abnormal condition affecting the body of an organism. It is often construed to be a medical condition associated with specific symptoms and signs. It may be caused by external factors, such as infectious disease, or it may be caused by internal dysfunctions, such as autoimmune diseases. In humans, "disease" is often used more broadly to refer to any condition that causes pain, dysfunction, distress, social problems, or death to the person afflicted, or similar problems for those in contact with the person. In this broader sense, it sometimes includes injuries, disabilities, disorders, syndromes, infections, isolated symptoms, deviant behaviors, and atypical variations of structure and function, while in other contexts and for other purposes these may be considered distinguishable categories. Diseases usually affect people not only physically, but also emotionally, as contracting and living with many diseases can alter one's perspective on life, and their personality.

Death due to disease is called death by natural causes. There are four main types of disease: pathogenic disease, deficiency disease, hereditary disease, and physiological disease.

Diseases can also be classified as communicable and non-communicable disease.

Read more about Disease:  Causes and Transmissibility, Burdens of Disease, Prevention, Treatments, Epidemiology, Social and Cultural Responses

Other articles related to "disease":

Coeliac Disease - History
... Western Asia, and it is likely that coeliac disease did not occur before this time ... manifested as loose stools that were white, malodorous and flatulent, and the disease was intractable and liable to periodic return ... The cause, according to Aretaeus, was sometimes either another chronic disease or even consuming "a copious draught of cold water." The paediatrician Samuel Gee gave ...
Coeliac Disease - Signs and Symptoms - Miscellaneous
... Coeliac disease has been linked with a number of conditions ... In many cases, it is unclear whether the gluten-induced bowel disease is a causative factor or whether these conditions share a common predisposition ... is present in 2.3% of patients with coeliac disease, and in turn, this condition features a tenfold increased risk of coeliac disease ...
Social and Cultural Responses - Language of Disease
... People use metaphors to make sense of their experiences with disease ... The metaphors move disease from an objective thing that exists to an affective experience ... The most popular metaphors draw on military concepts Disease is an enemy that must be feared, fought, battled, and routed ...
Coeliac Disease
... Coeliac disease ( /ˈsiːli.æk/ spelled celiac disease in North America and often celiac sprue) is an autoimmune disorder of the small intestine that occurs in genetically ... Coeliac disease is caused by a reaction to gliadin, a prolamin (gluten protein) found in wheat, and similar proteins found in the crops of the tribe Triticeae (which includes other common grains such ... While the disease is caused by a reaction to wheat proteins, it is not the same as wheat allergy ...
Coeliac Disease - Treatment - Refractory Disease
... A tiny minority of patients suffer from refractory disease, which means they do not improve on a gluten-free diet ... This may be because the disease has been present for so long that the intestines are no longer able to heal on diet alone, or because the patient is not adhering to the diet, or because the ...

Famous quotes containing the word disease:

    There is a disease to which plays as well as men become liable with advancing years. In men it is called doting, in plays dating. The more topical the play the more it dates.
    George Bernard Shaw (1856–1950)

    All my humor is based upon destruction and despair. If the whole world were tranquil, without disease and violence, I’d be standing on the breadline right in back of J. Edgar Hoover.
    Lenny Bruce (1925–1966)

    The peace loving nations must make a concerted effort in opposition to those violations of treaties and those ignorings of humane instincts which today are creating a state of international anarchy and instability from which there is no escape through mere isolation or neutrality.... When an epidemic of physical disease starts to spread, the community approves and joins in a quarantine of the patients in order to protect the health of the community against the spread of the disease.
    Franklin D. Roosevelt (1882–1945)