Coma, Confusion: 17 Possible Causes
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  • Coma
  • Confusion

What causes coma and confusion? 17 possible conditions

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

1

Head Injury

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

A head injury is an injury to your brain, skull, or scalp. All head injuries should be treated seriously and assessed by a doctor.

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2

Low Blood Sugar (Hypoglycemia)

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

Hypoglycemia, or low blood sugar, is a potentially dangerous condition that's most common in people with diabetes. Learn what causes it and how to prevent it.

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3

Cardiogenic Shock

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

Cardiogenic shock occurs when the heart has been damaged to the point where it's unable to supply enough blood to the organs of the body.

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4

Low Blood Sodium (Hyponatremia)

Low blood sodium, or hyponatremia, occurs when water and sodium are out of balance in your body. A quick drop in sodium levels can cause weakness, headache, nausea, and muscle cramps.

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5

Brain Abscess

An abscess of the brain is usually the result of a bacterial or fungal infection. The infection will cause your brain to swell from the collection of pus and dead cells that form. A brain abscess can form when fungi...

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6

Encephalitis

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

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

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7

Carbon Monoxide Poisoning

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

Learn about carbon monoxide poisoning and what causes it. Find information on carbon monoxide symptoms, diagnosis, treatment, and prevention.

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8

Acute Kidney Tubular Necrosis

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

Acute kidney tubular necrosis is caused when blood cannot reach the tissues and cells of the kidneys due to a blockage or restriction. This causes damage.

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9

Diabetes Insipidus

Diabetes insipidus (DI) is a rare condition that occurs when your kidneys are not able to conserve water. It results in extreme thirst for water and frequent urination. There are several types of DI, and they can ofte...

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10

Addisonian Crisis (Acute Adrenal Crisis)

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

An Addisonian crisis occurs when levels of cortisol suddenly drop. Learn more about an Addisonian crisis, including symptoms, risk factors, and treatment.

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11

Glomerulonephritis

Glomerulonephritis is a serious illness that can be life-threatening and requires immediate treatment. The condition is sometimes called nephritis.

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12

Chronic Kidney Disease

Chronic kidney disease (CKD) is the progressive and irreversible destruction of the kidneys. The most common causes of CKD are high blood pressure and diabetes.

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13

Reye's Syndrome

Reye's syndrome is a rare condition that strikes without warning. It most often affects children ages 4 to 12 who are recovering from a viral infection.

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14

Sarcoidosis

Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.

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15

Medullary Cystic Disease

Medullary cystic kidney disease (MCKD) is a rare condition in which small, fluid-filled sacs called cysts form in the center of the kidneys. These cysts scar the kidneys and cause them to malfunction. In order t...

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16

Beriberi

Beriberi is a term used for vitamin B1, or thiamine, deficiency. Vitamin B1 is found in foods like milk, beans, vegetables, meat, and whole grains.

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17

What's In Your Head: Chronic Subdural Hematoma

A chronic subdural hematoma (SDH) is a collection of blood on the brain's surface under the outer covering of the brain (dura).

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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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