Unlike most diseases the symptoms that a person with this disease varies from person to person.
Some people are just mildly affected others are severely affected.
This makes it hard to tell you exactly how the disease will affect a particular individual. Myotonic dystrophy is a rare disease with an incidence of about one in 8000. That means that most doctors will not have a patient with the disease in their practice. Thus, many people are turning to organizations like the Myotonic Dystrophy Organization for help and assistance. Appears later after 40's and generally mild As a general rule the early the disease is apparent the more severe the symptoms will be.