Nervous System Disorders
Car accidents, falls, and other injuries are a common cause of acute spinal cord injury.
Amyotrophic lateral sclerosis is a fatal neurological disorder that causes progressive degeneration of nerve cells in the spinal cord and brain. It is often referred to as Lou Gehrig disease.
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.
The brain is an important organ that controls thought, memory, emotion, touch, motor skills, vision, respiration, and every process that regulates your body.
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.
A brain tumor is an abnormal growth of tissue in the brain. The tumor can either originate in the brain itself or come from another part of the body and travel to the brain.
Here is a list of nervous system disorders that require clinical care by a physician or other healthcare professional.
Encephalitis is inflammation of the brain. The inflammation causes the brain to swell, which leads to changes in neurological function. It results in mental confusion and seizures. Read on to learn more.
Epilepsy is a brain condition that causes a person to have seizures. It's one of the most common disorders of the nervous system.
A neurological exam may be performed with instruments, such as lights and reflex hammers, and usually does not cause any pain.
Guillain-Barré syndrome (GBS) is a rare neurological disorder in which the body's immune system attacks the peripheral nervous system.
Lumbar disk disease occurs when the spongy disks between the vertebrae bulge out or rupture.
Nearly everyone has suffered from a headache. This article discusses several types of headache, how they are diagnosed and treated.
A head injury is a broad term that describes many injuries that occur to the scalp, skull, brain, and underlying tissue and blood vessels in the head. Head injuries are also commonly referred to as brain injury, or traumatic brain injury (TBI), depending on the extent of the head trauma.
A look at what we know about how migraine pain starts.
The nervous system is a complex, sophisticated system that regulates and coordinates the body's basic functions and activities. It is made up of two major divisions: the central nervous system and the peripheral nervous system.
Meningitis is inflammation of the membranes that surround the brain. Meningitis can be caused by either a virus or bacteria. Bacterial meningitis may be life-threatening.
Multiple sclerosis is a disease in which the fatty tissue that surrounds the nerves is destroyed. When this happens, the nerves are unable to conduct electrical impulses to and from the brain. It causes muscle weakness, impaired coordination, and fatigue.
Tension headaches are the most common type of headache. Stress and muscle tension are often factors in tension type headaches.
Muscular dystrophy is a group of inherited diseases that are characterized by weakness and wasting away of muscle tissue, with or without the breakdown of nerve tissue.
Neurology is the branch of medicine that is concerned with the study and treatment of disorders of the nervous system.
Neurological surgery is used to treat disorders of the brain, spine, and nerves. The healthcare provider who specializes in neurological surgery is called a neurosurgeon or neurological surgeon.
Disorders of the nervous system include stroke, infections, such as meningitis, carpal tunnel syndrome, and functional disorders, such as headache and epilepsy.
Parkinson disease is a motor system disorder that causes trembling, stiffness and trouble moving.
Neurological rehabilitation (rehab) helps people with diseases, injury, or disorders of the nervous system. It can often increase function, ease symptoms, and improve a person's well-being.
Septicemia is the clinical name for blood poisoning by bacteria. It is a medical emergency and needs urgent medical treatment.
Here is a list of the most common types of neurological disorders, including acute spinal cord injury, Alzheimer's disease, epilepsy, and headaches.
A helpful guide to understanding stroke rehab programs.
Evaluating and diagnosing damage to the nervous system is complicated and complex. Many of the same symptoms occur in different combinations among the different disorders.
To help diagnose a migraine, your doctor may ask you when your headaches occur, how long they last, and what they feel like.
Strokes are classified as either ischemic or hemorrhagic. Ischemic strokes are caused by the blockage of an artery. Hemorrhagic strokes are caused by bleeding in the brain.
This often severe, throbbing type of headache is different from other types of headaches in that symptoms other than pain occur with the headache. Nausea and vomiting, lightheadedness, sensitivity to light (photophobia), and other visual disturbances are common migraine symptoms.
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.
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 even eye movements.
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.
Myasthenia gravis is a chronic autoimmune disorder in which antibodies destroy neuromuscular connections. This causes problems with communication between nerves and muscle, resulting in weakness of the skeletal muscles. Myasthenia gravis affects the voluntary muscles of the body, especially the eyes, mouth, throat, and limbs.
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.
A stroke, or brain attack, happens when blood flow to your brain is stopped. It is an emergency situation.
Detailed information on stroke, also called brain attack, including history, statistics, symptoms, types, effects, diagnostic, treatment, and rehabilitation information
When an area of the brain is damaged, which typically occurs with a stroke, an impairment may result. An impairment is the loss of normal function of part of the body. Sometimes, an impairment may result in a disability, or inability to perform an activity in a normal way.
A mild concussion is caused by a blow or jolt to the head.
Absence seizures are a type of epilepsy that most often occur in children. Read on for details about this condition.
A traumatic brain injury is caused by a blow to or penetration of the head resulting in brain damage. Read on to learn about diagnosis, symptoms, and treatment.
Chronic inflammatory demyelinating polyradiculoneuropathy is a rare autoimmune disorder that attacks the myelin sheaths around nerve cells.
Transverse myelitis is inflammation and scarring of the spinal cord that causes pain and weakness in the body.
A Chiari malformation is a problem in which a part of the brain at the rear of the skull bulges through a normal opening in the skull where it joins the spinal canal. Read on to learn more about Chiari malformation type I, the most common type.
Essential tremor (ET) is a neurological disorder. It causes your hands, head, trunk, voice, or legs to shake rhythmically. It is often confused with Parkinson disease. It is most common in people older than age 65.
Huntington disease is a brain disorder that can lead to emotional disturbances, loss of intellectual abilities, and uncontrolled movements.
A seizure that lasts at least 30 minutes is called status epilepticus, or a prolonged seizure. This is a medical emergency that may lead to permanent brain damage or death. Many medical experts become concerned that a seizure is status epilepticus after it lasts 5 to 10 minutes.
Neuromyelitis optica (NMO) is a rare autoimmune disease that affects the central nervous system.
Poliomyelitis is commonly called polio. It is an infectious disease. It is caused by 3 types of poliovirus. Polio is easily spread from person to person. The poliovirus is a virus that causes paralysis. But most people who are infected with polio have no symptoms and a few have mild symptoms.
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.
Normal pressure hydrocephalus is excess cerebrospinal fluid buildup in the brain ventricles. It may develop from infection, bleeding, injury, or surgery.
Parkinson disease is a movement disorder that can cause muscles to tighten and become rigid. It can make it hard to walk and engage in daily activities.
Peripheral neuropathy is a type of damage to the nervous system.
Relapsing-remitting multiple sclerosis (MS) is a type of multiple sclerosis that causes flare-ups with periods of remission in between. Most people diagnosed with MS start off with this type.
Multiple sclerosis (MS) is a disease that interferes with your brain's ability to operate your body.
Prion diseases comprise several conditions. A prion is a type of protein that can trigger normal proteins in the brain to fold abnormally. Prion diseases can affect both humans and animals and are sometimes transmitted to humans by infected meat products. The most common form of prion disease that affects humans is Creutzfeldt-Jakob disease (CJD).
Alzheimer disease is a progressive condition, which means that it keeps getting worse. Eventually, people with Alzheimer disease need help with daily activities because they lose the ability to dress, bathe, and feed themselves.
Alzheimer disease most commonly affects older adults. But it can also affect people in their 30s or 40s. When Alzheimer disease occurs in someone younger than age 65, it is known as early-onset (or younger-onset) Alzheimer disease.
Alzheimer disease is a type of brain disorder. It causes memory loss, confusion, and changes in personality. It is a type of dementia.
Progressive supranuclear palsy is a disorder in a small section of the brain that causes weakness of certain muscles.This is a rare disorder but may be mistaken for Parkinson's disease.
Trigeminal neuralgia is a type of nerve pain that affects your face.
A brain injury or some other health problem can cause growing pressure inside your skull. This dangerous condition is called increased intracranial pressure (ICP). It can lead to a headache. It can also further injure your brain or spinal cord.
Dementia with Lewy bodies (DLB) is a form of progressive dementia. It's caused by the decay or deterioration of the tissues in the brain.
Frontotemporal dementia (FTD), a common cause of dementia, is a group of disorders that occur when nerve cells in the frontal and temporal lobes of the brain are lost. This causes the lobes to shrink. FTD can affect behavior, personality, language, and movement.
Vascular dementia is caused by decreased blood flow to brain tissue causing signs of dementia. Read on for details about this condition.
Made up of bundles of nerves, the spinal cord carries signals from your body to your brain, and vice versa.
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.
One way that scientists measure sleep is through brain waves, which change in specific ways as you move through the sleep process. Your brain waves change during four basic stages of sleep.
How and when you feel sleepy has to do with your sleep/wake cycles. These cycles are triggered by chemicals in the brain.
Insomnia is trouble falling to sleep or staying asleep. One in 3 adults has bouts of insomnia.
Details about common sleep disorders.
To find out the cause of your sleep problems, you may need many tests. These may confirm or rule out various health conditions and other problems.
Parasomnias are common sleep disorders that are characterized by strange or bizarre behavior or experiences during sleep.
A detailed look at dyssomnia sleep disorders. These sleep disorders are caused by another health problem.
Most adults need 7 to 8 hours of sleep each night. Sleep deprivation means you're not getting enough sleep.
Sleepwalking is a sleep disorder that involves walking while in a deep sleep. It is much more common in children than adults.
Complex regional pain syndrome is an abnormal response by the body to pain.
Radiculopathy, commonly called pinched nerve, often occurs in the low back.
Spinal cord stimulation is one way to manage various types of pain. A spinal cord stimulator is an implanted device that sends low levels of electricity directly into the spinal cord.
Transcutaneous electrical nerve stimulation, or TENS, offers pain relief for some people by sending low-voltage electrical current into the body.
Neural blockades, commonly called nerve blocks, are procedures that can help prevent or manage many different types of intractable pain.
If you don't get relief from standard pain relievers, your healthcare provider may suggest injecting pain-relieving medicine into the site of the affected nerve.
OTC pain relievers can be divided into just 2 main types: acetaminophen and nonsteroidal anti-inflammatory medicines, or NSAIDs.
Charcot-Marie-Tooth disease is an inherited nerve defect that causes abnormalities in the nerves that supply your feet, legs, hands, and arms.
Friedreich's ataxia is a rare, inherited, degenerative disease that damages the spinal cord, peripheral nerves and the cerebellum. It causes movement problems and loss of sensation due to nerve injury.
A meningioma is a tumor that grows in the meninges, the layers of tissues that cover the brain and spinal cord.
Lambert-Eaton syndrome is an autoimmune disorder affecting the areas where nerves and muscles connect. It causes weak muscles, trouble walking, and other symptoms.
An epidural abscess is an infection that forms in the space between your skull bones and your brain lining (intracranial epidural abscess).
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.
Dystonia is a body movement disorder. It causes your muscles to contract, move involuntarily, or get stuck in an abnormal position.
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 damaged by cancer or radiation treatment. Sometimes, brachial plexus injuries happen to babies during childbirth.
Pseudotumor cerebri is a disorder related to high pressure in the brain. It causes signs and symptoms of a brain tumor. It is also called intracranial hypertension.
A subarachnoid hemorrhage means that there is bleeding in the space that surrounds the brain. Most often, it occurs when a weakened area in a blood vessel (aneurysm) on the surface of the brain bursts and leaks. The blood then builds up around the brain and inside the skull increasing pressure on the brain. This can cause brain cell damage, life-long complications, and disabilities.
Arteriovenous malformations (AVMs) happen when a group of blood vessels in your body forms incorrectly. Here's what you need to know.
A cerebral cavernous malformation (CCM) is a collection of small blood vessels (capillaries) in the central nervous system that is enlarged and irregular in structure. In CCM, the walls of the capillaries are thinner than normal, less elastic, and are likely to leak. Cavernous malformations can happen anywhere in the body. They most commonly cause symptoms when they are found in the brain and spinal cord.
Arteriovenous malformations is the abnormal formation of veins and arteries. It can develop in the fetus or newborn baby.
A developmental venous anomaly is an unusual arrangement of small veins in the brain or spinal cord. It's a condition you are born with.
Cephalic disorders affect the central nervous system as it develops. They may also affect the brain and the growth of the skull.
Rathke cleft cysts are noncancerous fluid-filled growths that develop between the parts of the pituitary gland at the base of the brain. They develop while a baby is growing in the uterus. A Rathke cleft cyst develops from a piece of the fetus' developing Rathke pouch, which ultimately becomes part of the pituitary gland.
Corticosteroid injections can treat many skeletal, muscular, and spinal conditions. Some of these injections can be done by your healthcare provider during a routine clinic visit. Others need a referral to a pain specialist.
When used to treat injuries at home, cryotherapy refers to cold therapy with ice or gel packs that are usually kept in the freezer until needed. These remain one of the simplest, time-tested remedies for managing pain and swelling.
Patient-controlled analgesia (PCA) is a type of pain management that allows you to decide when you will get a dose of pain medicine. You don't need to wait for a nurse, and you can get smaller doses of pain medicine more often.
A glioma is a type of brain tumor that originates from glial cells, which help support the function of the other main brain cell type—the neuron.
A chordoma is a form of bone cancer that can occur anywhere along the length of the spine from the base of the skull to the lower back.
A paranasal sinus tumor is a cancer that has grown inside your sinuses, the open spaces behind your nose.
An olfactory neuroblastoma often happens on the roof of the nasal cavity. It involves the cribriform plate, which is a bone between the eyes and located deep in the skull.
A brain tumor starts when cells in the brain change and grow out of control. As they continue to grow, they form a mass of cells that becomes a tumor.
Sometimes brain tumors start in the lung, breast, skin, kidney, or other body parts and spread to the brain. These are called secondary or metastatic brain tumors.
Neurocutaneous syndromes are disorders that affect the brain, spinal cord, organs, skin, and bones. The diseases are lifelong conditions that can cause tumors to grow in these areas. They can also cause other problems such as hearing loss, seizures, and developmental problems.