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Brain Fog From Long Covid 19

Brain fog can be frustrating, but relief is possible. You should not ignore your symptoms because if left untreated, brain fog can impact the quality of your life. Once the underlying cause is addressed, your mental clarity can improve.

Brain fog is a symptom that can be caused by stress, sleep changes, medications, and other factors. It’s a type of cognitive dysfunction involving:

  • Memory problems
  • A lack of mental clarity
  • Poor concentration
  • An inability to focus


Some people also describe it as mental fatigue. Depending on the severity of brain fog, it can interfere with work or school. But it does not have to be a permanent fixture in your life.

Brain fog can feel similar to the effects of sleep deprivation or stress. It’s not the same as dementia and does not mean structural damage to the brain.

People usually recover from brain fog. You may get similar symptoms after other infections, a minor head injury or during the menopause. Brain fog is also common if you have depression, anxiety or stress.

Brain fog from long covid-19

While recovering from coronavirus (COVID-19), some people experience brain fog. Symptoms may vary and change over time. It’s not just people who were hospitalised with coronavirus who can develop brain fog. It’s a common part of long COVID.

Post-COVID syndrome involves a wide range of health problems that occur many weeks, months and years after recovering from COVID-19 infection. Sometimes, symptoms of long COVID-19 can include cognitive difficulties.

Brain fog is not a medical condition, however, it can affect one’s ability to think.

Short-term memory loss, confusion and difficulty concentrating are all things those suffering from “brain fog” may experience after recovering from COVID-19 infection.

How it’s diagnosed

Talk with a doctor if you have a persistent lack of clarity that worsens or does not improve. A single test cannot be used by a doctor diagnose brain fog. Brain fog may signal an underlying issue, so a doctor will conduct a physical examination and ask about your:

  • Mental health
  • Diet
  • Level of physical activity
  • Current medications or supplements


You should let your doctor know about other symptoms you might have. For example, someone with hypothyroidism may have brain fog along with hair loss, dry skin, weight gain, or brittle nails.

A blood test can detect the following:

  • Irregular glucose levels
  • Poor liver, kidney, and
  • Thyroid function
  • Nutritional deficiencies
  • Infections
  • Inflammatory diseases


Based on the results, your doctor will determine whether to investigate further. Other diagnostic tools may include imaging tests to look inside the body, like X-rays, magnetic resonance imaging (MRI), or computerized tomography (CT) scans. The doctor may also conduct allergy testing or a sleep study to check for a sleep disorder.

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