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What causes difficulty sleeping, irritable mood and loss of appetite? 6 possible conditions

See a list of possible causes in order from the most common to the least.


Depression Overview

Depression is a mood disorder that can cause extreme and persistent feelings of sadness, hopelessness, and worthlessness. Depression type largely determines what kind of medical treatment is best.

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What is anxiety? Anxiety often manifests itself as an apprehension about daily life. Learn the basics with this overview of the types of anxiety disorders.

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Acute Stress Disorder

In the weeks after a traumatic event, you may develop an anxiety disorder called acute stress disorder (ASD). ASD typically occurs within one month of a traumatic event. It lasts at least two days and up to one month...

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Teething Syndrome

Teething syndrome-or simply "teething"-is a normal process that infants go through as their teeth break, or cut, through their gums. Babies normally start teething when they are six months old. By the time a child i...

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Pinworm Infection

Pinworms are tiny, narrow worms less than half an inch long that can infect the intestines. Pinworm infections are easily spread, and are most common in children between the ages of five and 10.

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There are many symptoms of the autoimmune disease HIV/AIDS, including persistent skin rashes, night sweats, and mouth sores.

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This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.