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What Is Facial Nerve Palsy?

Facial nerve palsy causes facial muscle weakness or paralysis. Learn more about this condition, including symptoms, causes, and treatment. Facial...

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Facial Nerve (Cranial Nerve 7): Everything to Know

The seventh cranial nerve, known as the facial nerve, controls facial movement and expression. Learn more and discover what happens when it is...

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Lopsided Smile: Everything You Need to Know

There are many reasons someone may have a lopsided, or uneven, smile. Learn more about this type of smile and how to fix it. A crooked or uneven...

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What Is the Corneal Reflex?

The corneal reflex, or blink reflex, is involuntary blinking caused by stimulation of the cornea. Learn more about why it occurs and how to test it....

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12 Reasons Your Lip Is Twitching

Lip twitching can be caused by something as simple as drinking too much caffeine. Learn the symptoms, so you know when to seek medical care. Lip...

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Paralysis

Paralysis is weakness of part of the body, and it usually signals serious damage to the brain, spinal cord, or nerves of the body. Paralysis...

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What Is Executive Dysfunction?

Executive dysfunction impacts your ability to pay attention, remember information, stay organized, and more. Learn how to manage executive...

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Echolalia

Echolalia is the repetition of sounds and words without meaning. Learn why it happens and how to treat it. People with echolalia repeat sounds,...

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Dizziness and Sweating: What You Should Know

There are conditions that may cause dizziness and sweating. Learn more about the conditions, causes, symptoms, and when to seek medical attention....

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What Are the Signs of Caffeine Overdose?

Overdosing on caffeine is rare, but accidental overdose can happen. Here is the recommended amount of caffeine to consume for your health and safety....

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Delirium

Delirium is a mental state that causes disordered thinking, confusion, and disorientation. Learn about symptoms, types, causes, diagnosis, and...

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What Medications Cause Tardive Dyskinesia?

Tardive dyskinesia is a side effect that causes uncontrollable, repetitive body movements. It is caused by long-term use of antipsychotic...

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Akathisia vs. Tardive Dyskinesia: What Are the Differences?

Akathisia and tardive dyskinesia are side effects that have been linked to antipsychotic medications. Learn how each condition affects movement....

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What Is PANDAS Syndrome?

PANDAS syndrome stands for Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal Infections. It is a rare behavioral change...

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Is Tardive Dyskinesia Reversible?

Tardive dyskinesia is a movement disorder caused by antipsychotic medications. Though it is often permanent, in some cases it can be reversed....

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Tingling in the Head: Causes and Treatments

Common causes of tingling in the head include headaches that affect blood pressure and flow, respiratory infections, neurological disorders, and...

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Tardive Dyskinesia vs. Dystonia: What Are the Differences?

Dystonia and tardive dyskinesia are both movement disorders characterized by uncontrollable motor function. Here’s how to tell the difference....

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Understanding Brown-Séquard Syndrome

Brown-Séquard syndrome is a combination of pain sensory loss from one half of the body with weakness and other sensory losses on the other half....

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An Overview of Transverse Myelitis

Transverse myelitis is a rare neurological syndrome that causes inflammation on both sides of the spinal cord, resulting from damage to nerve cells....

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Top 7 Most Serious Causes of Back Pain

Most of the time, back pain will either resolve on its own or requires little treatment. Learn when back pain can signify very serious trouble....

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Overview of Elevated Intracranial Pressure

Find out about elevated intracranial pressure and its symptoms and causes. Learn what treatments are available and the complications that may occur....

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Understanding Your Electromyography Results

Electromyography (EMG) and nerve conduction studies (NCS) help neurologists locate and find the cause of diseases of nerves and muscles. Learn more....

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Overview of Pseudoseizures

Pseudo-seizures, also called psychogenic non-epileptic seizures​ (PNES), are seizures produced by psychological rather than physical causes....

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How Brain Death Is Diagnosed

Brain death indicates that there is no brain activity and no hope of recovery. In order to make the diagnosis, three conditions must be fully met....

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Why Do You Feel Cold All the Time?

A variety of health problems can cause cold intolerance and hypersensitivity to cold. Find out the causes of cold intolerance and some solutions. If...

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7 Disorders of Impaired Consciousness

Learn the definition of consciousness, ways doctors describe consciousness, and seven medical examples of impaired consciousness in patients. A...

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Evaluating Tremors and Their Causes

Learn about the variable causes of tremors, the science behind why they occur, and how they are diagnosed and treated by a neurologist. If anyone...

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What to Expect From a Tensilon Test

A Tensilon test is a diagnostic test that can help diagnose myasthenia gravis, a disease of the neuromuscular junction that causes muscle weakness. A...

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