What causes alteration in consciousness? 44 possible conditions

Viewing 1 - 20 of 44 results

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

1

Consciousness Decreased

Alertness and being oriented to place and time are major characteristics of consciousness. Alertness means that you are able to respond appropriately to the people and things around you. You are oriented when you kno...

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2

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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3

Epilepsy Overview

Epilepsy is a neurological condition caused by malfunctioning brain cells that result in seizures. There is no cure for this disorder but episodes can become less frequent.

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4

Sepsis

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

One life-threatening complication of infection is sepsis, which often occurs in people who are elderly or have weak immune systems. Patches of discolored skin is a symptom of severe sepsis.

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5

Organic Brain Syndrome

Organic brain syndrome (OBS) is a general term for decreases in mental function that are not caused by a psychiatric disorder. Reduced mental function could include: problems with memory difficulties understandin...

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6

Subarachnoid hemorrhage

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

This life-threatening hemorrhage involves bleeding between the brain and the tissues that cover it. If you experience an extreme headache, a popping sound in your head, seizures, and other symptoms, seek immediate help.

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7

Meningococcemia

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

Meningococcemia is a bacterial blood infection caused by the same type of bacteria that causes some types of meningitis. Advanced symptoms of the infection include blood clots and bleeding under the skin.

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8

Brain Aneurysm

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

An aneurysm in the brain is a weak area in an artery in the brain that bulges out and fills with blood. It can be unpredictable and life-threatening, and can cause extremely serious conditions.

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9

Intracerebral Hemorrhage

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

An intracerebral hemorrhage (ICH) occurs when blood suddenly bursts into brain tissue, causing damage to the brain, which may present symptoms similar to that of a stroke. Lobar intracerebral hemorrhages occur in th...

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10

Dissection of the Aorta

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

The aorta is a large artery that carries blood out of your heart. If you experience a dissection of the aorta, it means that blood has entered the wall of the artery, between the inner and middle layers. This can happe...

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11

Seizures

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

Seizures are changes in the brain's electrical activity. This can cause dramatic, noticeable symptoms or even no symptoms at all. The symptoms of a severe seizure are often widely recognized, including violent shakin...

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12

Low Blood Sugar (Hypoglycemia)

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

Also known as hypoglycemia, low blood sugar can be a dangerous condition. People often complain about low blood sugar. However, serious hypoglycemia is rare in adults and children over the age of 10 who are no...

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13

Meningitis

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

Meningitis is an inflammation of the meninges. This is the membrane that covers the brain and spinal cord. Meningitis may occur when fluid surrounding the meninges becomes infected. The most common causes of meningiti...

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14

Septicemia

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

Septicemia is also known as bacteremia or blood poisoning. Septicemia occurs when a bacterial infection enters the bloodstream. Untreated septicemia can quickly progress to sepsis, which is a serious complication of a...

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15

Parkinson's Disease

Parkinson's disease (PD) is a progressive neurological disorder. It first presents with problems of movement. Smooth and coordinated muscle movements of the body are made possible by a substance in the brain calle...

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16

Ischemic Cardiomyopathy

Ischemic cardiomyopathy (IC) is a condition that occurs when the heart muscle is weakened. In this condition, the left ventricle, which is the main heart muscle, is usually enlarged and dilated. This condition can be ...

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17

Primary Cerebral Lymphoma

Primary cerebral lymphoma is also known as brain lymphoma or central nervous system lymphoma. The brain and spinal cord make up the central nervous system. Cells called lymphocytes are part of the lymph system and ca...

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18

Low Blood Sodium (Hyponatremia)

Low blood sodium is also known as hyponatremia . Sodium is an electrolyte. It helps maintain the balance of water in and around your cells. Sodium is important for proper muscle and nerve function. It also keeps you...

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19

Congestive Heart Failure (CHF)

Congestive heart failure (CHF) is a chronic condition that affects the chambers of your heart. You have four heart chambers: two atria in the upper half of the heart and two ventricles in the lower half. Th...

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20

Pulmonary Edema

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

Pulmonary edema is a condition in which the lungs fill with fluid. When this occurs, the body struggles to get enough oxygen. The most common cause of pulmonary edema is congestive heart failure. Heart failure i...

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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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