Understanding Duchenne

Early Signs & Symptoms of Duchenne

If you're noticing something about how your child moves, you're not overreacting. Here's what parents and clinicians look for — and what to do next.

Duchenne muscular dystrophy is a genetic condition that causes muscles to weaken over time because the body cannot make enough working dystrophin — a protein muscles need to stay healthy. Symptoms most often become noticeable between ages 2 and 5, though some families notice differences earlier and others much later.

None of the signs below confirms Duchenne on its own. Many are common in children who do not have a neuromuscular condition at all. But when several appear together, they are a good reason to ask your pediatrician for a simple blood test.

A checklist of early Duchenne signs

Walking later than expected
Many boys later diagnosed with Duchenne take their first independent steps after 15–18 months, or walk with an unusually wide, waddling gait.
Frequent falls and trouble climbing stairs
Falling more than other children the same age, taking stairs one at a time, or pulling on a railing to get up are common early muscular dystrophy symptoms.
Using the hands to stand up (Gowers' sign)
A child pushes on their thighs and 'walks' their hands up their legs to rise from the floor. This is one of the most recognizable Duchenne signs.
Toe walking
Persistent walking on the toes, or tight heel cords that make it hard to put the heels flat on the ground.
Enlarged calf muscles
Calves can look unusually large or firm (pseudohypertrophy) as muscle tissue is gradually replaced by fat and scar tissue.
Tiring quickly, or trouble running and jumping
Difficulty keeping up with peers, avoiding running, or being unable to jump with both feet off the ground.
Speech or developmental delays
Some children have delayed speech or learning differences before any muscle weakness is noticed.
An unexplained high CK level
Creatine kinase (CK) that is hundreds of times above normal on routine bloodwork — often the first clue a clinician sees.

When to talk to a specialist

Bring your observations to your pediatrician and ask specifically about a creatine kinase (CK) blood test. It is inexpensive, widely available, and a very high result is the usual trigger for referral. If CK is elevated, the next step is genetic testing with a neuromuscular specialist, who can confirm the diagnosis and identify the specific change in the DMD gene.

Getting answers earlier matters: it opens the door to standard-of-care monitoring, approved treatments, and clinical trials that often have age or ambulation requirements.