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What causes drowsiness, irritability and memory loss? 5 possible conditions

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

1

Concussion

This condition is considered a medical emergency. Urgent care may be required.

Concussions can cause serious symptoms that require medical treatment. A concussion is a traumatic brain injury that results in an altered mental state.

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2

Encephalitis

This condition is considered a medical emergency. Urgent care may be required.

Encephalitis is inflammation of the brain tissue. It's most often caused by viral infections. In some cases, bacterial infections can also cause encephalitis.

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3

Hypercalcemia

Hypercalcemia is a condition in which you have too much calcium in your blood.

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4

Delirium

This condition is considered a medical emergency. Urgent care may be required.

Delirium is an abrupt change in the brain that causes mental confusion and emotional disruption. It makes it difficult to think, remember, sleep, pay attention, and more. You might experience the condition durin...

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5

Central Sleep Apnea

Central sleep apnea is a sleep disorder in which you briefly stop breathing during sleep. The moments of apnea can occur repeatedly throughout the night. The interruption of your breathing happens may indicate a proble...

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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.
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