Diseases of the nervous system (neurology)

This category covers diseases of the nervous system neurology with symptoms, causes, diagnostics, treatment options, and prevention basics.

Diseases Of The Nervous System Neurology brings together curated guides, checklists, and explanations to help navigate the topic with clarity.

Use this page as a starting point: learn key terms, common scenarios, and how clinicians usually approach diagnosis and treatment.

On this page:

Conditions grouped by specialty with clear navigation
Symptoms, causes, risk factors, and complications
Diagnosis pathways, including tests and imaging
Evidence-based treatment options and prevention

Medical information is educational; treatment should be individualized.

Use the links to learn what to ask at an appointment and how to prepare.

How to Maintain Memory as You Age: What Really Helps

Maintaining a strong memory as you age isn't a single "brain trainer," food, or vitamin, but a combination of several factors: regular physical activity, control of blood pressure, cholesterol, and diabetes, intellectual and social activity, proper nutrition, correction of hearing loss, and treatment of conditions that can impair cognitive function.

Why do people twitch when falling asleep? The reasons for twitching and when it's not normal.

A sudden jerk of the body, leg, or arm as one falls asleep is most often a normal physiological phenomenon—a hypnic jerk, or hypnic myoclonus. This is a brief, involuntary contraction of one or more muscles that occurs during the transition from wakefulness to sleep.

What is REM sleep and how much should you get?

REM sleep is a sleep phase characterized by rapid eye movements, high brain activity, and a near-complete temporary reduction in muscle tone in most skeletal muscles. It is during REM sleep that the most vivid dreams often occur, although dreams can also occur during other stages.

How to Restore Your Sleep Pattern: How to Get Back to Sleep and Wake Up at the Right Time

How Chronic Stress Affects the Body: Consequences and Symptoms

Chronic stress can indeed impact not only mood, but also sleep, the cardiovascular, immune, digestive, and reproductive systems. However, this doesn't mean a person has "constantly high cortisol" or that any weight gain, insomnia, abdominal pain, or high blood pressure is caused by stress.

Why You Wake Up at Night and Can't Sleep: Causes and What to Do

If a person regularly wakes up in the middle of the night and is unable to fall back asleep for a long time, this may be a variant of insomnia - a sleep maintenance disorder.

Why you constantly want to sleep: the main causes of drowsiness and when you need an examination

Constant sleepiness is most often associated with insufficient or poor-quality sleep at night, but sometimes it can be caused by a medical condition. If a person regularly sleeps less than they need, wakes up frequently during the night, works shifts, takes sedatives, or consumes alcohol, daytime sleepiness may be a natural consequence.