Pediatrics A 7 year old boy with progressive muscle weakness and walking difficulties presented with the following finding. What is the probable diagnosis? A Duchenne muscular dystrophy B Myotonic dystrophy C Spinal muscular atrophy D Emery-Derifuss muscular dystrophy 💡 Explanation A 7 year old boy with progressive muscle weakness and walking difficulties presented with the following finding. What is the probable diagnosis? ✓ Correct Answer: A. Duchenne muscular dystrophy