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:
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Seeing, hearing, feeling, smelling, or tasting things that are not really there (hallucinations or illusions).
Unfounded suspicions that others are after you or want to harm you (paranoia).
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:
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.
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WebMD Medical Reference from Healthwise
November 14, 2014
This information is not intended to replace the advice of a doctor.
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