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  1. Disease - Wikipedia

    There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases (including both genetic and non-genetic hereditary diseases), and physiological …

  2. Is It a Disease or an Illness? - Cleveland Clinic Health ...

    Mar 7, 2025 · Think a disease and an illness are the same thing? An internal medicine physician explains the difference.

  3. Disease | Definition, Types, & Control | Britannica

    Oct 8, 2025 · Disease, any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms.

  4. Medical Diseases & Conditions - Mayo Clinic

    Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic.

  5. All Diseases and Conditions | NIAMS

    Jun 5, 2025 · Osteoporosis is a bone disease that develops when the bones get weaker and less dense. When a child or teen develops osteoporosis, the condition is known as juvenile …

  6. What Is Disease? The Medical Science of Illness Explained

    Jun 1, 2025 · At first glance, the answer seems deceptively simple: disease is the presence of illness, of something going wrong within the body. But the deeper we probe into this …

  7. DISEASE | definition in the Cambridge English Dictionary

    DISEASE meaning: 1. (an) illness of people, animals, plants, etc., caused by infection or a failure of health rather…. Learn more.

  8. Centers for Disease Control and Prevention | CDC

    PCD is a peer reviewed journal covering research, public health findings, innovations, and practices on chronic diseases.

  9. DISEASE Definition & Meaning - Merriam-Webster

    The meaning of DISEASE is a condition of the living animal or plant body or of one of its parts that impairs normal functioning and is typically manifested by distinguishing signs and symptoms : …

  10. Disease - Simple English Wikipedia, the free encyclopedia

    A disease or medical condition is an unhealthy state where something bad happens to the body or mind. [1] Diseases can cause pain, parts of the body to stop working the right way, or death.