Signs of Duchenne

If a boy has a combination of the traits listed below, he should be tested for Duchenne:

Has a hard time lifting his head or has a weak neck
Is not walking by 15 months
Has a hard time walking, running, or climbing stairs
Is not speaking as well as other kids his age
Needs help getting up from the floor or walks his hands up his legs in order to stand (Gower Maneuver)
Has calves that look bigger than normal (pseudohypertophy)
Walks with his legs apart
Walks on his toes and waddles
Walks with his chest pointed out (or has a sway back, saddle back, or hollow back)

These are the common signs of Duchenne. Information about its progression can be found here.