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Diseases and Conditions

Find doctor-approved information about symptoms, causes, diagnosis, treatment and prevention of common diseases and conditions.

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All conditions that start with the letter M
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  • A young woman leans over a toilet bowl as if she may vomit. Morning sickness refers to the nausea and vomiting some people have when they become pregnant. It affects the majority of pregnant people.

    Morning Sickness

    Morning sickness refers to the nausea and vomiting that some people have when they become pregnant. Morning sickness is very…

  • Motion Sickness

    Motion sickness is feeling triggered by movement. It occurs in cars, buses, trains, planes, or boats. It also can happen…

  • Male Doctor Wearing Blue Gloves Holding Cotton Swab And DNA Test Tube to test for monkeypox

    Mpox (monkeypox)

    Mpox (monkeypox) began making the news following a surge in new cases in summer 2022. This outbreak includes reports of…

  • Doctor treating a senior woman who has possible bone fractures

    Multiple Myeloma

    Multiple myeloma is a kind of cancer in the bone marrow. It is caused when your body makes too many…

  • A female neurologist shows a male patient with multiple sclerosis symptoms something on a synthetic brain.

    Multiple Sclerosis

    Multiple sclerosis is a disease that affects the central nervous system. There is no cure, but there are medicines that…

  • Pediatrician exams a child's lymph nodes. Mumps is a virus that is spread like the common cold. Mumps symptoms can cause you to feel sick for two weeks.

    Mumps

    Learn about mumps and how it can be prevented.

  • Little girl sitting in mother’s lap at doctor’s office

    Munchausen Syndrome by Proxy

    Munchausen syndrome by proxy is a mental illness in which a caregiver acts as though the person under their care…

  • A person sits in a wheelchair in his room. Muscular dystrophy is a group of rare genetic diseases that weaken and shrink your muscles. It is permanent and gets worse over time.

    Muscular Dystrophy

    Muscular dystrophy is a group of genetic diseases that weaken and shrink your muscles. It is rare, but it gets…

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