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Health Library A to Z

M

  • Major Depression in Adolescents
  • Depression is a mood disorder that involves a adolescent's body, mood, and thoughts. It can affect and disrupt eating, sleeping, or thinking patterns.

  • Making Family Fitness Fun
  • Activity can help prevent heart disease, cancer, and stroke. It can also lessen feelings of depression, and boost confidence. As children get older, they often reduce their physical activity. Because of this, making activity a family priority is key.

  • Male Conditions
  • Detailed information on the most common male genitourinary conditions

  • Malocclusion
  • Detailed information on malocclusion, including causes, diagnosis, and treatment

  • Managing Breastfeeding
  • Detailed information on mismanaged breastfeeding, including information on breastfeeding positions

  • Marfan Syndrome in Children
  • Marfan syndrome is a genetic disorder that affects the body's connective tissue. Connective tissue holds the body's cells, organs, and other tissue together. Connective tissue is also important in growth and development.

  • Mastoiditis in Children
  • Mastoiditis is an inflammation or infection of the mastoid bone. This bone is one of the bones in the head. It is located behind the ear. The mastoid bone is made of cells that drain the middle ear. Mastoiditis may be mild or very serious.

  • Measuring a Baby's Temperature
  • Most physicians recommend taking a baby's temperature rectally, by placing a thermometer in the baby's anus. This method is accurate and gives a quick reading of the baby's internal temperature.

  • Meckel's Diverticulum
  • Meckel's diverticulum is a small pouch in the wall of the intestine. It’s near where the small and large intestines meet. This condition is the most common birth defect of the digestive system. It happens to about 1 in 50 babies.

  • Meconium Aspiration
  • Meconium aspiration happens when a newborn breathes in a mixture of meconium and amniotic fluid. Amniotic fluid is the liquid that surrounds the baby in the womb. Meconium is the baby's first stool, or poop, which is sticky, thick, and dark green. It is typically passed in the womb during early pregnancy and again in the first few days after birth.

  • Medical Genetics: Chromosome Studies
  • When a chromosome is abnormal, it can cause health problems in the body. Tests called studies can look at chromosomes to see what type of problem a person has.

  • Medical Genetics: Multifactorial Inheritance
  • Multifactorial inheritance is when more than one factor causes a trait or health condition, such as a birth defect or chronic illness. The main factor is genes. But the cause includes other factors that aren’t genes.

  • Medical Genetics: Teratogens
  • A teratogen is something that can cause or raise the risk for a birth defect in a baby. They are things that a mother may be exposed to during her pregnancy.

  • Medicine Rashes in Children
  • Medicine rashes are the body’s reaction to a certain medicine. The type of rash that occurs depends on the type of medicine that is causing it. Rashes can range from mild to severe.

  • Megaloblastic Anemia in Children
  • Anemia is a problem in which there are not enough red blood cells or hemoglobin. Hemoglobin is the part of red blood cells that carries oxygen throughout the body. In megaloblastic anemia, the bone marrow, where the cells are formed, makes fewer cells. And the cells that are formed don’t live as long as normal.

  • Megaureter
  • Detailed information on megaureter, including causes, symptoms, diagnosis, and treatment

  • Meningitis in Children
  • Meningitis is an inflammation of the membranes that surround the brain and the spinal cord. Bacteria or viruses are the more common causes.

  • Meningococcal Infections
  • Detailed information on meningococcal infections, including symptoms, diagnosis, treatment, and prevention

  • Menstrual Disorders
  • Detailed information on the most common menstrual conditions, including premenstrual syndrome (PMS), premenstrual dysphoric disorder, amenorrhea, dysmenorrhea, and menorrhagia

  • Microcephaly
  • An infant with microcephaly has a head that is much smaller than normal for an infant of that age and gender. Most children with microcephaly also have a small brain and mental retardation.

  • Micropenis
  • Detailed information on micropenis, including causes, symptoms, diagnosis, and treatment

  • Milk Allergy Diet for Children
  • The words "non-dairy" on a product label mean that it does not contain butter, cream, or milk—but it could still contain other types of milk products.

  • Minor Injuries Overview
  • Children's days are filled with running, jumping, bicycling, sports, and other fun activities that keep them active and "on-the-go" from morning until night. Along with the fun comes an occasional cut, bruise, or tumble. Luckily, most of these injuries are not serious.

  • Mold
  • Detailed information on mold allergy, including potential sources of mold inside and outside the home

  • Molluscum Contagiosum in Children
  • Molluscum contagiosum is a viral skin disease that causes small pink or skin-colored bumps on your child’s skin. It is not harmful and usually does not have any other symptoms. The virus is inside the bumps and is mildly contagious. These bumps usually clear over time.

  • Mosaic Down Syndrome
  • Detailed information on mosaic Down syndrome, including the chances for it to happen again in a family

  • Motor Vehicle Safety Overview
  • Detailed information on motor vehicle safety, including installing and using child safety seats and booster seats

  • Mouthguards
  • Mouthguards are important to help protect your child's mouth and teeth from serious injury.

  • Mumps
  • Mumps is a highly contagious viral illness that usually occurs in childhood. It is no longer common in the United States because children are now vaccinated against it.

  • Muscular Dystrophy
  • Muscular dystrophy causes the muscles in the body to become very weak. The muscles break down and are replaced with fatty deposits over time.

  • Myasthenia Gravis in Children
  • Myasthenia gravis is a complex, autoimmune disorder that causes problems with the nerves that communicate with muscles, resulting in weakness of the skeletal muscles.

  • Overview of Mood Disorders in Children and Adolescents
  • Mood disorders in teens remain one of the most under-diagnosed mental health problems. These disorders also put teens at risk for other conditions that may persist long after the initial episodes of depression are resolved.

  • Rubeola (Measles)
  • Detailed information on measles, including symptoms, complications, prevention, and treatment

  • Tympanostomy Tubes
  • Tympanostomy (ear) tubes are small tubes. They’re placed into your child’s eardrum by an ear, nose, and throat (ENT) surgeon. The tubes may be made of plastic, metal, or other material.

  • Weight Management and Adolescents
  • For overweight children 7 and older, the initial goal is to keep them from gaining more weight. Changes in eating habits and exercise are gradually introduced to trim pounds.