Morning-after pill
This type of emergency birth control can help prevent a pregnancy after sex if protection…
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Diseases & Conditions
Morning sickness
Learn more about nausea and vomiting during pregnancy. Learn about remedies that may help ease…
繼續閱讀Motion sickness: First aid
Any type of transportation can bring on the nausea and dizziness of motion sickness. Here…
繼續閱讀Mouth cancer
Learn what healthcare professionals look for when diagnosing mouth cancer. Find out about oral cancer…
繼續閱讀Mouth sores caused by cancer treatment: How to cope
Find out what you can do to prevent mouth sores before you begin cancer treatment.
繼續閱讀Moyamoya disease
This rare condition happens when blood flow to the brain is blocked or narrowed and…
繼續閱讀Mpox (monkeypox): What is it and how can it be prevented?
Find out more about this rare viral infection, the possible symptoms in humans, treatment options…
繼續閱讀MRI: Is gadolinium safe for people with kidney problems?
Older gadolinium contrast agents used with MRI posed a risk for people with severe kidney…
繼續閱讀MRSA infection
MRSA infections often occur in health care settings, but they can happen anywhere. Find out…
繼續閱讀Mucus in stool: A concern?
Visible mucus in stool can have a variety of causes, but they're not always serious.
繼續閱讀Multiple endocrine neoplasia, type 1 (MEN 1)
Learn about this rare condition that causes tumors to grow and too many hormones to…
繼續閱讀Multiple endocrine neoplasia, type 2 (MEN 2)
Learn about this rare disorder that causes tumors and overproduction of hormones.
繼續閱讀Multiple myeloma
Learn about this cancer that forms from white blood cells called plasma cells. Treatments include…
繼續閱讀Multiple sclerosis: Can it cause seizures?
Seizures occur more often in people with multiple sclerosis than in the general population.
繼續閱讀Multiple system atrophy
This rare condition affects movement, blood pressure and other functions of the body.
繼續閱讀Multisystem inflammatory syndrome in children (MIS-C) and COVID-19
Learn about symptoms of MIS-C, a serious condition linked to coronavirus disease 2019 (COVID-19). Get…
繼續閱讀Multivitamins: Do young children need them?
Multivitamins: Are they good insurance for young children?
繼續閱讀Muscle pain
Muscle pain: Symptom — Overview covers definition, possible causes of this symptom.
繼續閱讀Muscle strains
Minor strains may only overstretch a muscle or tendon, while more severe injuries may involve…
繼續閱讀Muscular dystrophy
Find out about the various types of this condition, which affects muscles over time. Then…
繼續閱讀Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)
This complicated condition may be triggered by an infection. While there's no cure for ME/CFS,…
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