Progressive Supranuclear Palsy (cont.)
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Exams and Tests
Many different conditions can cause dementia symptoms. No test can confirm that you have PSP. Your health care provider has the difficult task of finding the cause of your symptoms. This is very important, because some causes of dementia are reversible with treatment, while others are not.
The process of narrowing down the possibilities to reach your diagnosis is complicated. Your health care provider will gather information from several different sources. At any time in the process, he or she may consult an expert in brain disorders (neurologist or psychiatrist).
The first step in the evaluation is the medical interview. You will be asked questions about your symptoms and when they appeared, about medical problems now and in the past, about medications you have taken now and in the past, about family medical problems, about your work and travel history, and about your habits and lifestyle. You may need a family member to help you answer these questions. A physical examination will look for physical disabilities and signs of underlying conditions such as high blood pressure and heart disease. It will include a mental status examination. This involves answering questions and following simple directions. Neuropsychological testing may be done to identify the extent of dementia.
No lab test can confirm the diagnosis of PSP. Blood tests may be done to rule out other conditions that cause dementia symptoms. These include infections, blood disorders, chemical abnormalities, hormonal disorders, and liver or kidney problems.
Brain scans are not very helpful in establishing the diagnosis of PSP, but they can rule out many other conditions that cause dementia.
Neuropsychological testing is the most accurate method of pinpointing and documenting a person’s cognitive problems and strengths. Results vary with the site and severity of damage in the brain.
Sleep studies: Sleep patterns are often abnormal in people with PSP. You may undergo a sleep test called a polysomnogram.
Eric R Eggenberger, DO
Robert A Hauser, MD
Francisco Talavera, PharmD, PhD
Stephen Berman, MD, PhD
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