A nurse is discussing the diagnosis of Duchenne muscular dystrophy (DMD) with the parents of an 8-year-old. She correctly explains:

DMD is a progressive loss of muscle strength and it will worsen over time.

this is a dominant disorder, so one of the parents likely also has DMD.

muscle function will gradually return, and recovery is possible in most children.

DMD results from an apparently toxic reaction to certain medications.