Health Library

Medical Genetics-Multifactorial Inheritance

Multifactorial inheritance is when more than 1 factor causes a trait or health problem, such as a birth defect or chronic illness. Genes can be 1 factor, but other things that aren't genes can play a part, too.

Medicine Rashes in Children (Drug Rashes)

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. 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 in Children

Megaureter is a ureter that is much wider than normal. A megaureter may not drain urine normally. This can lead to infections and kidney damage.

Meningococcal Infection in Children

Meningococcal infections are not common, but they can be fatal. Learn about the causes in children, symptoms, diagnosis, treatment, and more.

Menstrual Cramps (Dysmenorrhea) in Teens

Menstrual cramps (dysmenorrhea) are severe, painful cramps that occur with menstruation.

Menstrual Disorders

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

Metatarsus Adductus in Children

Metatarsus adductus is a common foot deformity noted at birth. It causes the front half of the child's foot (forefoot) to turn inward.

Microcephaly in Children

Microcephaly is a condition where a baby's head is much smaller than normal. It is most often present at birth (congenital). Most children with microcephaly also have a small brain and an intellectual disability. Some children with small heads have normal intelligence.

Micropenis in Children

A micropenis is a penis that is smaller than normal. A penis length of less than 0.75 inches is considered micropenis.

Migraine Headaches During Pregnancy

Many women have migraine headaches while pregnant. The good news is that you don't have to give in to the pain when it strikes. Know what pain-relief choices are safest for you.

Milk Production and Your High-Risk Baby

When you have a high-risk baby, you may face some challenges with milk production. Read on to learn details of what to expect, as well as helpful tips and strategies.