Interactive Tools See All  Target Heart Rate Calculator Your target heart rate is the range at which sustained physical activity - running, cycling, swimming laps, or any other aerobic exercise - is considered safe and effective....more  Adult BMI Calculator Experts are increasingly urging people to know their BMI, a figure that takes into account not just weight but also height to indicate body fat....more  Cholesterol Quiz An excess of cholesterol can build up in the arteries, narrowing them and slowing or blocking blood flow to the heart.

Women and Heart Disease See All  For Women: Take This Risk to Heart in Women and Heart Disease Women often perceive heart disease as an older person's disease that need not concern them until menopause. ...more  Heart Attacks and Women in Women and Heart Disease Heart attacks and their aftermath tend to be more deadly in women. Yet for many women, the warning signs of a heart attack are very subtle and easy to ignore. Read on to learn about the signs you need to pay attention to.

Getting Started Memory Quizchevron_right Migraine Headaches Quizchevron_right Parkinson Disease Quizchevron_right Today in Health News Scrolling, Staring at Screens Could Give You 'Tech Neck' Read this Article More Health News Calculate Your Health Stroke: Test Your Knowledge True or false: There's no way of predicting if or when someone will have a stroke.

About the Brain and Nervous System See All  Anatomy of the Brain in About the Brain and Nervous System The brain is an important organ that controls thought, memory, emotion, touch, motor skills, vision, respiration, and every process that regulates your body. ...more  Understanding Skull Base Tumors in About the Brain and Nervous System The skull base offers support from the bottom. Think of it as the floor of the skull, where the brain sits. Tumors can form at the base of the skull.

Congenital and Hereditary Conditions See All  Anencephaly in Children in Congenital and Hereditary Conditions Anencephaly is a birth defect that affects the brain and skull bones. With this condition, the brain isn't fully formed. It often lacks part or all of the cerebrum. ...more  Cephalic Disorders in Congenital and Hereditary Conditions Cephalic disorders affect the central nervous system as it develops. They may also affect the brain and the growth of the skull.

Headaches See All  Kids' Headaches: The Diagnosis Is Difficult in Headaches Most headaches in kids are caused by tension, not disease. Your pediatrician can determine what kind of headache your child has. ...more  Headaches in Children in Headaches A headache is pain or discomfort in one or more areas of the head or face. Headaches can happen once in a while. Or they may happen often. ...more

Injuries  See All  Acute Spinal Cord Injury (SCI) in Children in Injuries Acute spinal cord injury (SCI) is when the spinal cord is damaged from an accident or other situation. An SCI may be a bruise (contusion), a partial tear, or a complete tear (transection) in the spinal cord. ...more  Head Injury in Children in Injuries A head injury can be as mild as a bump, bruise (contusion), or cut on the head. Or it can be a concussion, a deep cut or open wound, broken skull bones, internal bleeding, or damage to the brain.

Other Neurological Conditions See All  Absence Seizures in Other Neurological Conditions Absence seizures are a type of epilepsy that most often occur in children. Read on for details about this condition. ...more  Brain Abscess in Children in Other Neurological Conditions An abscess is a pocket of infection. In the brain, an abscess may be in one or more areas. This condition may cause problems with how the brain and spinal cord function. It is a serious and life-threatening condition that needs to be treated right away.

Other Neurological Conditions  See All Headaches See All Injuries  See All Neuromuscular Diseases See All Other Neurological Conditions See All  Kids' Headaches: The Diagnosis Is Difficult in Headaches Most headaches in kids are caused by tension, not disease. Your pediatrician can determine what kind of headache your child has. ...more  Headaches in Children in Headaches A headache is pain or discomfort in one or more areas of the head or face. Headaches can happen once in a while. Or they may happen often.

Brain and Nervous System Overview See All  Anatomy of a Child's Brain in Brain and Nervous System Overview The brain can be divided into 3 main parts: the cerebrum, the brainstem, and the cerebellum....more  Neurological Exam for Children in Brain and Nervous System Overview Is it time for your baby to have a full physical exam? Your pediatrician might want to conduct a "neuro exam." Don't worry, this series of tests designed to evaluate your child's nervous system is painless. Here's what it entails.