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Temporary Confusion or Decreased Alertness

Table of Contents


Topic Overview

Many health problems cause confusion or decreased alertness. It is not unusual for a person who is sick to be sleepy or confused when he or she wakes up. But extreme sleepiness may be a symptom of a more serious health problem.

Confusion may range from mild to severe. Symptoms of confusion may include:

Decreased alertness occurs when a person is not fully awake, aware of, or able to respond normally to his or her external environment. Decreased alertness may also mean that a chronic illness has gotten worse.

A sudden change in the mental state or level of consciousness may be caused by:

Other problems that may lead to confusion or decreased alertness include:

A complete medical examination may be needed before the cause of your confusion or decreased alertness can be diagnosed. Treatment depends on the cause of the problem. Contact your doctor for an exam if you are having problems with confusion or decreased alertness.


Credits for Temporary Confusion or Decreased Alertness

Current as of: October 19, 2020

Author: Healthwise Staff
Medical Review:
William H. Blahd Jr. MD, FACEP - Emergency Medicine
Adam Husney MD - Family Medicine
Kathleen Romito MD - Family Medicine


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