9th September 2020

A 12-year-old boy with no previous medical history is brought to the GP by his mother

A 12-year-old boy with no previous medical history is brought to the GP by his mother, because she has noticed that he is finding it difficult to get up from his chair at mealtimes. She says that for him to stand up, he must “walk his hands up his legs”. On examination, there is some proximal muscle weakness, but no sensory abnormalities.

For the patient above, please select the SINGLE most likely underlying cause of their muscle weakness. Select ONE option from the list above.