• Understanding Duchenne
• Caring
  for Him
• Advancing
  Research
• Leading
  the Way
• Ending
  Duchenne
• Uniting the Community

• About Duchenne
  • About Dystrophin + Utrophin
  • Signs of Duchenne
  • How to Prevent Duchenne
  • Who Gets Duchenne
  • What Causes Duchenne
  • How Duchenne is Identified
  • How Duchenne Progresses
• New Diagnosis
  • First Steps
  • What You Can Do
  • Parenting Children with Duchenne
  • Finding Support
• Stages of
  Duchenne
  • Early Phase
  • Transitional Phase
  • Loss of Ambulation
  • Adult Stage
• For Family
  Members
  • Parents
  • Brothers + Sisters
  • Grandparents
  • Relatives + Friends
• For
  Professionals
  • Teachers
  • Physical Therapists
  • Physicians
  • Researchers

Although the progression and severity of each case is different, there are four generally recognized stages of Duchenne. Consider the ages attributed to each stage as approximate.

Physical decline in Duchenne is first apparent when boys are very young. Weakness is most obvious in large muscles (such as legs), and progresses to small muscles (such as hands) over time.

Early Phase
Transitional Phase
Loss of Ambulation
Adult Stage