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   What causes an altered level of consciousness?

   • An altered level of consciousness can result from a variety of factors, including alterations in the chemical environment of the brain (e.g. exposure to poisons or intoxicants ), insufficient oxygen or blood flow in the brain, and excessive pressure within the skull. Prolonged unconsciousness is understood to be a sign of a medical emergency.

   Altered level of consciousness - Wikipedia

   en.wikipedia.org/wiki/Altered_level_of_consciousness

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   What happens when a person loses consciousness?

   • Onset usually occurs when a person is sitting up or standing. [citation needed] When people lose consciousness, they fall down (unless prevented from doing so) and, when in this position, effective blood flow to the brain is immediately restored, allowing the person to regain consciousness.

   Reflex syncope - Wikipedia

   en.wikipedia.org/wiki/Reflex_syncope

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   What is an altered level of consciousness?

   • An altered level of consciousness is any measure of arousal other than normal. Level of consciousness ( LOC) is a measurement of a person's arousability and responsiveness to stimuli from the environment.

   Altered level of consciousness - Wikipedia

   en.wikipedia.org/wiki/Altered_level_of_consciousness

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   What is a disorder of consciousness?

   • Some define disorders of consciousness as any change from complete self-awareness to inhibited or absent self-awareness and arousal. This category generally includes minimally conscious state and persistent vegetative state, but sometimes also includes the less severe locked-in syndrome and more severe but rare chronic coma.

   Disorders of consciousness - Wikipedia

   en.wikipedia.org/wiki/Disorders_of_consciousness

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2. en.wikipedia.org › wiki › Syncope_(medicine)Syncope (medicine) - Wikipedia

   en.wikipedia.org › wiki › Syncope_(medicine)

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   Syncope, commonly known as fainting or passing out, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. It is caused by a decrease in blood flow to the brain , typically from low blood pressure . [1]

   • Vasovagal Syncope

     Reflex syncope is a brief loss of consciousness due to a...

   • Unconsciousness

     Loss of consciousness should not be confused with the notion...

   • Consciousness

     Consciousness, at its simplest, is awareness of internal and...

   • Disorders of consciousness

     Disorders of consciousness are medical conditions that...

   • Altered level of consciousness

     An altered level of consciousness can result from a variety...

3. www.mayoclinic.org › diseases-conditions › comaComa - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org › diseases-conditions › coma

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   Dec 14, 2022 · Overview. Coma is a state of prolonged loss of consciousness. It can have a variety of causes, including traumatic head injury, stroke, brain tumor, or drug or alcohol intoxication. A coma may even be caused by an underlying illness, such as diabetes or an infection. Coma is a medical emergency.