Getting Started
Memory Quizchevron_right


Calculate Your Health

True or false: There's no way of predicting if or when someone will have a stroke.

Back and Neck PainSee All
 Low Back Pain in Back Pain, Care of the Back
Everyone has experienced low back pain at one time or another. Most people can recover from low back pain with home treatment, such as changes in activity, weight loss, quitting smoking, and other steps. Sometimes medicine or surgery is needed. ...more
 Pinched Nerve in Back Pain
Radiculopathy, commonly called pinched nerve, often occurs in the low back....more
 Corticosteroid Shots in Care of the Back
Corticosteroid injections can treat many skeletal, muscular, and spinal conditions. Some of these injections can be done by your health care provider during a routine clinic visit. Others need a referral to a pain specialist. ...more
 Neck Pain in Neck Pain
Your neck is at risk for injury because of its location and range of motion. Neck pain can be caused by injury, age, or inflammatory disorders. ...more
 Cervical Spondylosis in Neck Pain
Cervical spondylosis is a type of arthritis that affects your neck. This condition becomes more common with age, and most people who are older than 60 have it. ...more
Back PainCare of the Back Neck Pain
 Low Back Pain in Back Pain, Care of the Back
Everyone has experienced low back pain at one time or another. Most people can recover from low back pain with home treatment, such as changes in activity, weight loss, quitting smoking, and other steps. Sometimes medicine or surgery is needed. ...more
 Pinched Nerve in Back Pain
Radiculopathy, commonly called pinched nerve, often occurs in the low back....more
 Corticosteroid Shots in Care of the Back
Corticosteroid injections can treat many skeletal, muscular, and spinal conditions. Some of these injections can be done by your health care provider during a routine clinic visit. Others need a referral to a pain specialist. ...more
 Neck Pain in Neck Pain
Your neck is at risk for injury because of its location and range of motion. Neck pain can be caused by injury, age, or inflammatory disorders. ...more
 Cervical Spondylosis in Neck Pain
Cervical spondylosis is a type of arthritis that affects your neck. This condition becomes more common with age, and most people who are older than 60 have it. ...more
Brain and Spinal Cord InjuriesSee All
 Head Injury in Brain Injuries
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, depending on the extent of the head trauma. ...more
 Traumatic Brain Injury (TBI) in Brain Injuries
Acquired brain injury hapens when a sudden, external, physical assault damages the brain. It is one of the most common causes of disability and death in adults. ...more
 Acute Spinal Cord Injury (SCI) in Spine Injuries
Car accidents, falls, and other injuries are a common cause of acute spinal cord injury....more
 Spinal Cord Compression in Spine Injuries
Spinal cord compression can occur anywhere along your spine. Symptoms include numbness, pain, and weakness. ...more
Brain InjuriesSpine Injuries
 Head Injury in Brain Injuries
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, depending on the extent of the head trauma. ...more
 Traumatic Brain Injury (TBI) in Brain Injuries
Acquired brain injury hapens when a sudden, external, physical assault damages the brain. It is one of the most common causes of disability and death in adults. ...more
 Acute Spinal Cord Injury (SCI) in Spine Injuries
Car accidents, falls, and other injuries are a common cause of acute spinal cord injury....more
 Spinal Cord Compression in Spine Injuries
Spinal cord compression can occur anywhere along your spine. Symptoms include numbness, pain, and weakness. ...more
Brain and Spinal TumorsSee All
 Anatomy of the Brain in About Brain Tumors
The brain is an important organ that controls thought, memory, emotion, touch, motor skills, vision, respiration, and every process that regulates your body. ...more
 Brain Tumor: Risk Factors in About Brain Tumors
Healthcare providers do not know exactly what causes a brain tumor. But certain factors may raise your risk. ...more
 Spinal Cord Tumor Overview in About Spinal Tumors
A tumor forms when an abnormal cell grows to form a mass of abnormal cells. Spinal cord tumors are tumors that form on the spinal cord or in the area around it. ...more
About Brain TumorsDeciding on Treatment About Spinal Tumors
 Anatomy of the Brain in About Brain Tumors
The brain is an important organ that controls thought, memory, emotion, touch, motor skills, vision, respiration, and every process that regulates your body. ...more
 Brain Tumor: Risk Factors in About Brain Tumors
Healthcare providers do not know exactly what causes a brain tumor. But certain factors may raise your risk. ...more
 Spinal Cord Tumor Overview in About Spinal Tumors
A tumor forms when an abnormal cell grows to form a mass of abnormal cells. Spinal cord tumors are tumors that form on the spinal cord or in the area around it. ...more
Epilepsy and SeizuresSee All
 Epilepsy and Seizures in Epilepsy and Seizures
Epilepsy is a brain condition that causes a person to have seizures. It's one of the most common disorders of the nervous system. ...more
 Status Epilepticus in Epilepsy and Seizures
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. ...more
 Epilepsy During Pregnancy in Epilepsy and Seizures
Epilepsy is a disorder of the nervous system. It is also called a seizure disorder. Normally the body's nerves send information by electrical and chemical signals. People with epilepsy have abnormal electrical signals in the brain. This can cause a seizure. Seizures can cause severe shaking of muscles. Or they may be very mild with hardly any symptoms at all. ...more
 Refractory Epilepsy in Epilepsy and Seizures
Some people with epilepsy will have or eventually develop refractory epilepsy. This means that medicines don't work well, or at all, to control the seizures. ...more
 Epilepsy and Seizures in Epilepsy and Seizures
Epilepsy is a brain condition that causes a person to have seizures. It's one of the most common disorders of the nervous system. ...more
 Status Epilepticus in Epilepsy and Seizures
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. ...more
 Epilepsy During Pregnancy in Epilepsy and Seizures
Epilepsy is a disorder of the nervous system. It is also called a seizure disorder. Normally the body's nerves send information by electrical and chemical signals. People with epilepsy have abnormal electrical signals in the brain. This can cause a seizure. Seizures can cause severe shaking of muscles. Or they may be very mild with hardly any symptoms at all. ...more
 Refractory Epilepsy in Epilepsy and Seizures
Some people with epilepsy will have or eventually develop refractory epilepsy. This means that medicines don't work well, or at all, to control the seizures. ...more
Multiple Sclerosis See All
 Multiple Sclerosis (MS) in Multiple Sclerosis
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. ...more
Multiple sclerosis (MS) is a disease that interferes with your brain's ability to operate your body. ...more
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. ...more
 Optic Neuritis in Multiple Sclerosis
Optic neuritis is a condition that affects the eye and your vision. It occurs when the optic nerve is inflamed. ...more
Multiple sclerosis is a central nervous system disorder. Pregnancy does not appear to speed up MS or make its effects worse. ...more
 Multiple Sclerosis (MS) in Multiple Sclerosis
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. ...more
Multiple sclerosis (MS) is a disease that interferes with your brain's ability to operate your body. ...more
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. ...more
 Optic Neuritis in Multiple Sclerosis
Optic neuritis is a condition that affects the eye and your vision. It occurs when the optic nerve is inflamed. ...more
Multiple sclerosis is a central nervous system disorder. Pregnancy does not appear to speed up MS or make its effects worse. ...more
Neurological InfectionsSee All
 Bacterial Meningitis in Neurological Infections
Bacterial meningitis is an infection of the membranes that cover the brain and spinal cord. It causes headache, stiff neck, and high fever. ...more
 Meningitis in Neurological Infections
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. ...more
A look at the 2 vaccines designed to help prevent meningococcal disease in preteens, teens, and young adults: MenACWY and MenB. ...more
BSE is a cattle disease, and vCJD is the equivalent disease in humans. Both are fatal brain diseases. Researchers believe that people become infected by eating beef contaminated with BSE. ...more
 Cerebral Abscess in Neurological Infections
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. ...more
 Encephalitis in Neurological Infections
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. ...more
Herpes meningoencephalitis is an infection of the brain and the tissue that covers it with the herpes simplex virus. ...more
 Epidural Abscess in Neurological Infections
An epidural abscess is an infection that forms in the space between your skull bones and your brain lining (intracranial epidural abscess). ...more
 Bacterial Meningitis in Neurological Infections
Bacterial meningitis is an infection of the membranes that cover the brain and spinal cord. It causes headache, stiff neck, and high fever. ...more
 Meningitis in Neurological Infections
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. ...more
A look at the 2 vaccines designed to help prevent meningococcal disease in preteens, teens, and young adults: MenACWY and MenB. ...more
BSE is a cattle disease, and vCJD is the equivalent disease in humans. Both are fatal brain diseases. Researchers believe that people become infected by eating beef contaminated with BSE. ...more
 Cerebral Abscess in Neurological Infections
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. ...more
 Encephalitis in Neurological Infections
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. ...more
Herpes meningoencephalitis is an infection of the brain and the tissue that covers it with the herpes simplex virus. ...more
 Epidural Abscess in Neurological Infections
An epidural abscess is an infection that forms in the space between your skull bones and your brain lining (intracranial epidural abscess). ...more
More
Neuromuscular DiseasesSee All
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. ...more
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. ...more
 Distal Muscular Dystrophy in Neuromuscular Diseases
Distal muscular dystrophy (DD) is a group of rare diseases that affect your muscle. It usually appears between ages 40 and 60, but it can sometimes show up as early as the teen years. ...more
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. ...more
 Lambert-Eaton Syndrome in Neuromuscular Diseases
Lambert-Eaton syndrome is an autoimmune disorder affecting the areas where nerves and muscles connect. It causes weak muscles, trouble walking, and other symptoms. ...more
 Myasthenia Gravis in Neuromuscular Diseases
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. ...more
 Polymyositis in Neuromuscular Diseases
Polymyositis is a disease that causes muscles to become irritated and inflamed. The muscles eventually start to break down and become weak. The condition can affect muscles all over the body. It can make even simple movements hard to do. Polymyositis is 1 disease in a group of diseases called inflammatory myopathies. ...more
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. ...more
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. ...more
 Distal Muscular Dystrophy in Neuromuscular Diseases
Distal muscular dystrophy (DD) is a group of rare diseases that affect your muscle. It usually appears between ages 40 and 60, but it can sometimes show up as early as the teen years. ...more
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. ...more
 Lambert-Eaton Syndrome in Neuromuscular Diseases
Lambert-Eaton syndrome is an autoimmune disorder affecting the areas where nerves and muscles connect. It causes weak muscles, trouble walking, and other symptoms. ...more
 Myasthenia Gravis in Neuromuscular Diseases
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. ...more
 Polymyositis in Neuromuscular Diseases
Polymyositis is a disease that causes muscles to become irritated and inflamed. The muscles eventually start to break down and become weak. The condition can affect muscles all over the body. It can make even simple movements hard to do. Polymyositis is 1 disease in a group of diseases called inflammatory myopathies. ...more
Other Neurological Conditions See All
 Acoustic Neuroma in Other Neurological Conditions
Acoustic neuroma is a rare noncancer tumor. It affects hearing and balance when the tumor presses on the nerves in the inner ear. ...more
 Bell Palsy in Other Neurological Conditions
Bell's palsy is an unexplained episode of facial muscle weakness or paralysis that begins suddenly and gets worse over 48 hours. It is caused by a damaged facial nerve. ...more
Bladder or bowel incontinence means a problem with holding in urine or stool. Here's what you should know. ...more
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. ...more
Complex regional pain syndrome is an abnormal response by the body to pain....more
Ménière disease is a balance disorder. It causes a severe spinning sensation (vertigo), hearing issues, loss of balance, and headaches. ...more
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. ...more
Normal pressure hydrocephalus is excess cerebrospinal fluid buildup in the brain ventricles. It may develop from infection, bleeding, injury, or surgery. ...more
 Acoustic Neuroma in Other Neurological Conditions
Acoustic neuroma is a rare noncancer tumor. It affects hearing and balance when the tumor presses on the nerves in the inner ear. ...more
 Bell Palsy in Other Neurological Conditions
Bell's palsy is an unexplained episode of facial muscle weakness or paralysis that begins suddenly and gets worse over 48 hours. It is caused by a damaged facial nerve. ...more
Bladder or bowel incontinence means a problem with holding in urine or stool. Here's what you should know. ...more
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. ...more
Complex regional pain syndrome is an abnormal response by the body to pain....more
Ménière disease is a balance disorder. It causes a severe spinning sensation (vertigo), hearing issues, loss of balance, and headaches. ...more
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. ...more
Normal pressure hydrocephalus is excess cerebrospinal fluid buildup in the brain ventricles. It may develop from infection, bleeding, injury, or surgery. ...more
More
Parkinson's and Movement DisordersSee All
 Parkinson Disease in Parkinson's Disease
Parkinson disease is a motor system disorder that causes trembling, stiffness, and trouble moving. ...more
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. ...more
 Ataxia in Other Movement Disorders
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. ...more
 Dystonia in Other Movement Disorders
Dystonia is a body movement disorder. It causes your muscles to contract, move involuntarily, or get stuck in an abnormal position. ...more
Parkinson's DiseaseOther Movement Disorders
 Parkinson Disease in Parkinson's Disease
Parkinson disease is a motor system disorder that causes trembling, stiffness, and trouble moving. ...more
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. ...more
 Ataxia in Other Movement Disorders
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. ...more
 Dystonia in Other Movement Disorders
Dystonia is a body movement disorder. It causes your muscles to contract, move involuntarily, or get stuck in an abnormal position. ...more
Peripheral Nerve ConditionsSee All
 Brachial Neuritis in Peripheral Nerve Conditions
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. ...more
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. ...more
Women develop carpal tunnel syndrome 3 times more frequently than men. It usually occurs only in adults. ...more
Cubital tunnel syndrome happens when the ulnar nerve, which passes through the inside of the elbow, is injured and becomes inflamed, swollen, and irritated. The pain of cubital tunnel syndrome feels like the pain you feel when you hit your "funny bone." ...more
Guillain-Barré syndrome (GBS) is a rare neurological disorder in which the body's immune system attacks the peripheral nervous system. ...more
 Diabetic Neuropathy in Peripheral Nerve Conditions
Diabetic neuropathy is nerve damage due to diabetes. Over time, high blood sugar (glucose) can damage the tiny blood vessels that supply your nerves, especially in the legs and feet. ...more
 Peripheral Neuropathy in Peripheral Nerve Conditions
Peripheral neuropathy is a type of damage to the nervous system....more
 Brachial Neuritis in Peripheral Nerve Conditions
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. ...more
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. ...more
Women develop carpal tunnel syndrome 3 times more frequently than men. It usually occurs only in adults. ...more
Cubital tunnel syndrome happens when the ulnar nerve, which passes through the inside of the elbow, is injured and becomes inflamed, swollen, and irritated. The pain of cubital tunnel syndrome feels like the pain you feel when you hit your "funny bone." ...more
Guillain-Barré syndrome (GBS) is a rare neurological disorder in which the body's immune system attacks the peripheral nervous system. ...more
 Diabetic Neuropathy in Peripheral Nerve Conditions
Diabetic neuropathy is nerve damage due to diabetes. Over time, high blood sugar (glucose) can damage the tiny blood vessels that supply your nerves, especially in the legs and feet. ...more
 Peripheral Neuropathy in Peripheral Nerve Conditions
Peripheral neuropathy is a type of damage to the nervous system....more