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What is differential diagnosis?
Why is it important (some examples)?
What are some questions you'd ask to make your dx?
- The process of narrowing possibilities and reaching conclusions about the nature of a deficit
- Important because it can help with localization of a neurological disease; influence decision making; provide strong evidence for presence of neurologic dx; ID other problems
- Onset of symptoms, level of awareness, medications, patterns of symptoms
What are questions to answer with differential dx?
- 1. Is a speech disorder present?
- 2. Is it neurogenic?
- 3. If so, what type of MSD?
- 4. What are the implications of the type of MSD for lesion localization?
Guidelines for Differential Dx
2. If not able to make diagnosis:
3. If exam inconclusive:
4. Diagnosis should make sense relative to ____ ____
5. Co-occuring ____
6. ____ is determined to be normal
7. All changes in speech aren't _____
- Diagnostic attempt
- Explain why not
- Don't make diagnosis
- Lesion location
- **If unsure what it is, say what it isn't
Contributions of Darley, Aronson, & Brown (4)
- Idea of types of dysarthrias-not singular
- Different types reflect different neuroanatomic/physiologic structures and/or function
- Each type presents with its own unique pattern of auditory perceptual characteristics
- Those patterns of characteristics reflect different neuropathology's and or lesion locations