Becker Muscular Dystrophy
Onset: Adolescence or adulthood.
Symptoms: Almost identical to Duchenne but often much less severe; there may
be significant heart involvement.
Progression: Slower and more variable than Duchenne with survival well into
mid to late adulthood.
Inheritance: X-linked recessive.
Emery-Dreifuss Muscular Dystrophy
Onset: Childhood to early teens.
Symptoms: Weakness and wasting of shoulder, upper arm and shin muscles. Joint
deformities are common.
Progression: Disease usually progresses slowly. Frequent cardiac complications
are common.
Inheritance: X-linked recessive (females are carriers).
Types of Muscular Dystrophy
Duchenne Muscular Dystrophy
Limb-Girdle Muscular Dystrophy
Myotonic Dystrophy
Congenital Muscular Dystrophy
Infantile Progressive Spinal Muscular
Atrophy (Also known as SMA Type 1, Werdnig-Hoffman)
Juvenile Spinal Muscular Atrophy (Also
known as SMA Type 3, Kugelberg-Welander)
Spinal Bulbar Muscular Atrophy (SBMA) (Also
known as Kennedy's Disease and X-Linked SBMA)
Adult Spinal Muscular Atrophy (SMA)
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