All Hearts HCM Symptoms

Brain fog, sometimes referred to as fuzzy thinking, is a momentary lapse in mental acuity and alertness.

Everyone has moments when we aren't thinking clearly. Sometimes we're just distracted or tired. However, sometimes we have a lot of those moments, and can't focus the way we need to. That is often called brain fog.

Brain fog is a symptom, not a medical condition. There are many things that can cause brain fog. Poor sleep is a common one. People with sleep apnea, for example, often have trouble focusing. Some medications can cause brain fog. Brain fog can be caused by fatigue, but can also cause fatigue. Other causes include underactive thyroid gland, anxiety or depression, and low vitamin B12. Problems with blood pressure - either too high or too low - can also cause brain fog. So can dehydration. Of course some serious neurological conditions can cause brain fog, but more often the cause is one of those already listed.

For heart patients, brain fog may be caused by reduced blood flow, heart failure, or arrhythmias.

There is one other issue that may sometimes be called brain fog. After heart surgery, some patients have difficulty focusing and thinking. The reasons aren't completely clear, but it does seem to go away over time.

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