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Also called silent disease, silent stage, or asymptomatic disease. This is a stage in some diseases before the symptoms are first noted. [23] Terminal phase If a person will die soon from a disease, regardless of whether that disease typically causes death, then the stage between the earlier disease process and active dying is the terminal phase.
A systemic disease is one that affects a number of organs and tissues, or affects the body as a whole. [1] It differs from a localized disease , which is a disease affecting only part of the body (e.g., a mouth ulcer ).
An autoimmune disease is a condition that results from an anomalous response of the adaptive immune system, wherein it mistakenly targets and attacks healthy, ...
Huntington's disease is a neurodegenerative disease that is characterized by a triad of motor, cognitive, and psychiatric signs and symptoms. [31] A large number of these groups that can be characteristic of a particular disease are known as a syndrome. Noonan syndrome for example, has a diagnostic set of unique facial and musculoskeletal ...
As described by the United States Centers for Disease Control and Prevention, these include the following: [2] Identify the existence of the outbreak (Is the group of ill persons normal for the time of year, geographic area, etc.?) Verify the diagnosis related to the outbreak; Create a case definition to define who/what is included as a case
A disease cluster is an unusually large aggregation of a relatively uncommon disease (medical condition) or event within a particular geographical location or period. [1] Recognition of a cluster depends on its size being greater than would be expected by chance . [ 1 ]
HIV was a zoonotic disease transmitted to humans in the early part of the 20th century, though it has now evolved into a separate human-only disease. [36] Some strains of bird flu and swine flu are zoonoses; these viruses occasionally recombine with human strains of the flu and can cause pandemics such as the 1918 Spanish flu or the 2009 swine ...
The main concept in nosology is the disease entity. Normally there are two ways to define a disease entity: Manifestational criteria and causal criteria. [3] Manifestational criteria. These are a set of criteria based on signs, symptoms and laboratory findings that define a disease. They define a disease by its symptoms and medical findings.