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Mental Health
Everyone feels worried or anxious or down from time to time. But relatively few people develop a mental illness. What's the difference? A mental illness is a mental health condition that gets in the way of thinking, relating to others, and day-to-day function.
Dozens of mental illnesses have been identified and defined. They include depression, generalized anxiety disorder, bipolar disorder, obsessive-compulsive disorder, post-traumatic stress disorder, schizophrenia, and many more.
Mental illness is an equal opportunity issue. It affects young and old, male and female, and individuals of every race, ethnic background, education level, and income level. The good news is that it can often be treated.
Signs and symptoms of mental illness depend in part on the illness. Common symptoms include
- feeling down for a while
- extreme swings in mood
- withdrawing from family, friends, or activities
- low energy or problems sleeping
- often feeling angry, hostile, or violent
- feeling paranoid, hearing voices, or having hallucinations
- often thinking about death or suicide.
In some people, symptoms of a mental illness first appear as physical problems such as stomach aches, back pain, or insomnia.
Individuals with a mental illness can often ease their symptoms and feel better by talking with a therapist and following a treatment plan that may or may not include medication.

How is PSA used to monitor prostate cancer?

Effects of sleep deprivation

Progressive relaxation techniques for insomnia

How to test for sleep apnea: At home or in a lab

How sleep deprivation can harm your health

Extreme heat endangers older adults: What to know and do

Want to cool down? 14 ideas to try

What is a PSA test and how is it used?

Blood sugar–friendly fruits if you have diabetes

Gratitude enhances health, brings happiness — and may even lengthen lives
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