article_snippet.sent: We've told both both that the doctors are trying to find a medicine to help. '
article_snippet.sent: Although not apparent at birth symptoms appear in early childhood.
article_snippet.sent: The disorder is diagnosed via a blood test and muscle tissue sample.
article_snippet.sent: Sufferers are likely to need increasing help and treatments from the age of nine.
article_snippet.sent: Walking becomes difficult and a wheelchair is usually needed by the age of 12.
article_snippet.sent: As patients go through patients teenage years patients are more likely to suffer from complications such as chest infections.
article_snippet.sent: The eventual cause of death is usually a severe chest infection at the stage when lung function is already poor. '
article_snippet.sent: The condition affects around one in 3,500 and causes difficulties with movement, meaning a wheelchair is normally needed by the age of 12.