Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.
Absence seizures are a type of epilepsy that is most common in children. it is characterized by a blank or absent stare.
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.
Car accidents, falls, and other injuries are a common cause of acute spinal cord injury.
Alzheimer disease is a disease that affects the brain and nervous system. It is a type of dementia that happens when nerve cells in the brain die.
Amyotrophic lateral sclerosis is a fatal neurological disorder characterized by progressive degeneration of nerve cells in the spinal cord and brain. It is often referred to as Lou Gehrig's disease.
Anencephaly is a birth defect that affects the brain and skull bones. With this condition, the brain is not fully formed. It often lacks part or all of the cerebrum.
Astrocytoma is the most common type of brain tumor in children. It is usually low grade, which means slow-growing.
Ataxia means without coordination. People with ataxia lose muscle control in their arms and legs, which may lead to a lack of balance, coordination, and trouble walking. Ataxia may affect the fingers, hands, arms, legs, body, speech, and...
Bacterial meningitis is an infection of the membranes that cover the brain and spinal cord. It is characterized by headache, stiff neck, and high fever.
Muscular dystrophy (MD) is an inherited (genetic) disorder of the muscles. It is called a neuromuscular disease. There are several types. Becker muscular dystrophy (BMD) is a rare type.
Bell's palsy is an unexplained episode of facial muscle weakness or paralysis that begins suddenly and worsens over 48 hours. It is caused by a damaged facial nerve.
Brachial neuritis is nerve damage that affects the chest, shoulder, arm, and hand. It causes pain, weakness and lack of muscle control and lack of feeling in the shoulder or arm.
The brachial plexus can be injured in many different ways — from pressure, stress, or being stretched too far. The nerves may also be cut or damaged by cancer or radiation treatment. Sometimes, brachial plexus injuries happen to babies ...
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 ...
A brain cyst is a type of abnormal fluid-filled sac in the brain. They are usually noncancerous.
A brain tumor is an abnormal growth of tissue in the brain. The brain is part of the central nervous system (CNS). The CNS also includes the spinal cord.
Burners and stingers syndrome is a type of sports injury. It is a pain in the shoulder or neck that causes a burning or stinging feeling down an arm to the hand.
Carnitine palmitoyl transferase (CPT) deficiency is a very rare condition that causes muscle weakness and other symptoms. It happens because of a problem with 1 of 2 enzymes, CPT1 or CPT2. Enzymes are substances in the body that help ...
A carotid dissection is a type of tear in one of your carotid arteries. It is a common cause of stroke in people under age 50.
A cerebral abscess can cause your brain to swell, putting harmful pressure on brain tissue. An abscess can also keep blood from flowing to parts of your brain. If you develop this problem, you will need emergency treatment.
A cerebral aneurysm (also called an intracranial aneurysm or brain aneurysm) is a bulging, weakened area in the wall of an artery in the brain, resulting in an abnormal ballooning of the artery that is at risk for rupturing.
Cerebral palsy (CP) is a lifelong condition that affects how the brain and muscles communicate. CP affects body movement, muscle control, coordination, reflexes, posture, and balance.
Charcot-Marie-Tooth disease is an inherited nerve defect that causes abnormalities in the nerves that supply your feet, legs, hands, and arms.
A Chiari malformation (CM) is a problem with how the brain sits in the skull. The brain normally sits fully inside the skull. With a Chiari malformation, the lower part of the brain (cerebellum) dips down through a normal opening ...
Choroid plexus papilloma (CPP) is a rare type of brain tumor. These tumors are usually not cancerous. This condition is most common in young children, but can also occur in adults.
Chronic inflammatory demyelinating polyradiculoneuropathy is a rare autoimmune disorder that attacks the myelin sheaths around nerve cells.
Cluster headaches are rare and cause severe pain that tends to recur in the same way each time. Cluster headaches occur in groups, or clusters, and each attack last about 1 to 3 hours on average.
Complex regional pain syndrome is an abnormal response by the body to pain.
A mild concussion is called by a blow or jolt to the head.
Cranial neuropathy is a disorder that causes nerve damage in the nerves that arise from the brain and brainstem. This disorder can affect the ability of the face and eyes to feel and move.