Pathogenesis. How the disease develops. The sequence of events or physiologic processes that result in disease.
What is disease? One definition is: An interruption, cessation, or disorder of body functions, systems, or organs. Another is the pattern of response of a living organism to some form of injury with a resultant alteration in normal function.
For a long list of diseases and information about them go to the disease list at CDC.
Injury. Damage or harm caused to the structure or function of the body.
Infection. A detrimental colonization of a host organism by a foreign species.
Angiogenesis. The process of blood vessel formation.
Apoptosis. Programmed cell death. Usually a normal biological function.
Atherosclerosis. A disease of arteries characterized by chronic inflammation, scarring and cholesterol deposits in large and medium-sized arteries.
Atrophy. A shrinkage in the size of cells, organs and tissues.
Dysplasia. An abnormal development of a body tissue.
Embolism. Obstruction of a blood vessel by an abnormal mass formed elsewhere in the circulation and transported to its point of impaction.
Fibrosis. The formation of fibrous tissuek, usually as a reaction to chronic inflammation.
Gangrene. Combination of tissue necrosis with infection.
Homeostasis. The maintenance of a steady state in respect of physiologic function in the face of environmental variation.
Hyperplasia. An increase in the number of cells in a given population.
Hypertrophy. An increase in the size of individual cells usually due to increase workload.
Hypoxia. A reduction in the supply of oxygen.
Impaction. The lodgement of some abnormal mass in a hollow muscular tube causing blockage of the lumen.
Infarct. An area of tissue necrosis caused by a lack of blood supply to the affected region.
Ischemia. The pathophysiologic state in which the blood supply of an organ or tissue is reduced below its metabolic needs.
Metaplasia. A change in a cell population from one fully differentiated form to another fully differentiated form.
Necrosis. The death of a tissue within a circumscribed area.
Thrombosis. The formation of an abnormal intravascular mass from the constituents of flowing blood.
Thrombus. An abnomal intravascular mass formed from the constituents of flowing blood.