Scientists have long struggled to define brain fog—let alone pinpoint a cause for it. But research is starting to reveal multiple potential causes from inflammation to a leaky blood-brain barrier.

A sentinel headache is a sudden, severe headache that can indicate a medical emergency. Learn about the symptoms, causes, ...

When the immune system breaks down, pollutants, toxins and other irritants are allowed into the body. This is more common with the lungs and gut, but such breakdowns happen in the brain too.

A leaky blood-brain barrier allows inflammatory molecules released from degenerating muscles to enter the brain, potentially worsening cognitive symptoms. The cerebellum, vital for motor learning ...