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There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases (including both genetic and non-genetic hereditary diseases), and physiological diseases. Diseases can also be classified in other ways, such as communicable versus non-communicable diseases.
“A disease is a condition that deteriorates the normal functioning of the cells, tissues, and organs.” Diseases are often thought of as medical conditions that are characterized by their signs and symptoms. The disease can also be defined as: “Any dangerous divergence from a functional or normal state of an entity.”
Jul 22, 2019 · NIAMS focuses on arthritis, musculoskeletal & skin diseases. Find causes, treatment & prevention for over 50 health topics.
5 days ago · disease, any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state.
A to Z list of common illnesses and conditions including their symptoms, causes and treatments.
In the anatomic classification, disease is categorized by the specific organ or tissue affected; hence, heart disease, liver disease, and lung disease. Medical specialties such as cardiology are restricted to diseases of a single organ, in this case the heart.
The A to Z library is a collection of articles covering many of the most commonly searched medical conditions. Each article contains a description of the condition; the symptoms; how it is diagnosed, prevented, and treated; the prognosis; and when to seek professional advice.
Feb 18, 2022 · Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful.
Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.
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