Question 347 · LEK · Spinal muscular atrophy
Select the correct statement(s) about spinal muscular atrophy (SMA):
- A. Werdnig-Hoffmann disease (SMA I) is the most common type.
- B. typical onset of Kugelberg-Welander disease (SMA III) is >18 months of age.
- C. without causal treatment the prognosis in Werdnig-Hoffmann disease (SMA I) is poor.
- D. Kugelberg-Welander disease (SMA III) is typically associated with muscle tremor.
- E. all answers are correct.
Hint
Recall the SMA classification by age of onset and best motor milestone, and the typical signs of lower motor neuron disease.
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