Brain not functioning / Brain fog

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Shohei Harase

Medically Reviewed By:

Shohei Harase, MD

Neurology

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  • Lost consciousness

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Content updated on May 23, 2022

When to See a Doctor

Seek professional care if you experience any of the following symptoms

  • Brain not functioning / Brain fog

Possible Causes

  • Diabetes mellitus (DM)

    A disease where blood sugar levels are abnormally high, due to problems with insulin production or resistance. There are often no symptoms until the condition has worsened, hence regular screening is important.

  • Cirrhosis of the liver

    A condition where normal liver is permanently damaged and replaced with scar issue. There are many different causes including infections, alcohol abuse and diabetes.

  • Sleep disorder

    Sleep disorders are conditions that affect the quality, timing or duration of your sleep, impacting your ability to function when you are awake. There are many types of sleep disorders, they include disturbances in the quality or quantity of sleep or excessive daytime sleepiness, abnormal behaviors that occur during sleep, sleep disorder related to a mental disorder and many more.

  • Schizophrenia
  • Alzheimer dementia (AD)
  • Common cold (upper respiratory tract infection)

Related Serious Diseases

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Do you have problems focusing or a reduced sense of awareness in your surroundings?

  • Have you currently regained consciousness after temporarily losing consciousness?

  • Do you have headaches or does your head feel heavy?

  • Do you have a fever?

  • Do you feel any weakness in your arms or legs?

Other Related Symptoms

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Shohei Harase

Medically Reviewed By:

Shohei Harase, MD

Neurology

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