Zhao Neurology

  Introduction Dementia gets used as a single label for a wide range of underlying conditions, which is part of why proper diagnosis matters more than the word itself suggests. Understanding what actually gets investigated during a dementia workup explains why two people with similar memory complaints can end up on very different treatment paths.   Dementia Is a Description, Not a Single Disease Dementia describes a set of symptoms affecting memory, thinking, and social abilities, not one specific illness. Alzheimer's disease is the most common underlying cause, accounting for roughly 60 to 80 percent of cases, but vascular dementia, Lewy body dementia, and frontotemporal dementia all fall under the same umbrella term with different causes and, in some cases, different treatment approaches. A proper dementia assessment exists specifically to identify which of these is actually driving a patient's symptoms.  What a First Visit Actually Involves A thorough work...

  Introduction MRI and CT scans get used almost interchangeably in conversation, both are "brain scans," both happen in a machine, both produce images a doctor reads. The actual difference is in what each technology is physically detecting, and that difference determines which one is the right tool for a given neurological question rather than the other.   Different Physics, Different Strengths An MRI scan uses magnetic fields and radio waves rather than radiation to build its image, which is part of why it's generally considered better for soft-tissue detail than a CT scan. A CT scan, by contrast, uses X-rays and tends to be faster and more available for urgent situations. Neither is a universally "better" scan, they're built to see different things well.  When an MRI Is the More Useful Investigation Unexplained headaches, dizziness, suspected stroke, multiple sclerosis, and a range of other neurological symptoms are commonly investigated with ...