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Diagnosing the Shakes: Tests and Exams Used to Identify Tremors
Published: Dec 13, 2023
When it comes to tremors, getting the right diagnosis is crucial for proper treatment. But how do doctors figure out what's causing those shakes?
The Physical Exam: More Than Meets the Eye
The diagnostic journey often starts with a thorough physical exam. Your doctor will observe your tremor, noting when it occurs and which body parts are affected. They might ask you to perform tasks like drinking from a glass, writing, or touching your nose with your finger. These simple tests can reveal a lot about the nature of your tremor. The doctor will also check for other neurological signs that might point to the underlying cause.
Blood Tests: Looking for Clues
Blood tests can help rule out certain causes of tremors. For example, thyroid function tests can detect hyperthyroidism, which can cause shaking. Tests for liver function and certain vitamins or minerals might also be ordered. In younger patients, tests for Wilson's disease, a rare genetic disorder that can cause tremors, may be recommended.
Imaging Tests: A Look Inside
Sometimes, doctors need to take a peek inside your brain. MRI (Magnetic Resonance Imaging) or CT (Computed Tomography) scans can reveal structural abnormalities that might be causing your tremor. These tests are especially useful if your doctor suspects conditions like multiple sclerosis or stroke. In some cases, a special type of scan called DaTscan might be used to differentiate between essential tremor and Parkinson's disease.
Specialized Tests: Digging Deeper
For a more detailed analysis, your doctor might use electromyography (EMG) to measure muscle activity and nerve conduction. This can help distinguish between different types of tremors. In some cases, neuropsychological testing might be recommended to assess cognitive function, especially if certain neurological conditions are suspected.
Frequently Asked Questions
Most diagnostic tests for tremors are painless.
It varies, but can take several appointments and tests.
Usually not; diagnosis often requires multiple tests and observations.
Many are, but check with your provider for specifics.
It depends on the test; always follow your doctor's instructions.
Piecing Together the Puzzle
While diagnosing tremors can be complex, these tests help doctors uncover the cause and determine the best treatment plan.
References
- Thenganatt MA, Louis ED. Distinguishing essential tremor from Parkinson's disease: bedside tests and laboratory evaluations. Expert Rev Neurother. 2012;12:687-696.
- van de Wardt J, et al. Systematic clinical approach for diagnosing upper limb tremor. J Neurol Neurosurg Psychiatry. 2020;91:822-830.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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