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Lipoma
Lipoma — Comprehensive overview covers symptoms, causes, treatment of this usually harmless fatty tumor that tends to show up in middle age.
Male infertility
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
Measles
Learn about this vaccine-preventable disease that used to be common in childhood and is well known for a characteristic red, splotchy rash and high fever.
Meniere's disease
This chronic disorder affects balance and hearing, causing unpredictable episodes of dizziness and hearing problems.
Microcephaly
Learn more about microcephaly, when an infant's head is smaller than expected. The condition affects child development.
Milk allergy
Find out what happens when the immune system reacts to proteins in milk, causing allergic signs and symptoms such as hives and wheezing.
Mixed connective tissue disease
Mixed connective tissue disease has signs and symptoms of multiple disorders, making it difficult to diagnose. There's no cure, but medications can help.
Molluscum contagiosum
Learn how to prevent and treat this common skin infection that affects people of all ages.
Morning sickness
Learn more about nausea and vomiting during pregnancy. Learn about remedies that may help ease that queasy feeling.
Mosquito bites
Learn about the many ways to prevent mosquito bites and how to ease the itch if you are bitten.
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