When Does Hypertrophic Cardiomyopathy Develop? Although hypertrophy may be present at birth or in childhood, it is much more common for the heart to appear normal at this time. Occasionally, Hypertrophic Cardiomyopathy is the cause of a stillbirth or develops during infancy, with heart failure, which may be fatal.
Re: Adult onset HCM Hi Pam, Thanks, I've read this before "With HCM will my heart continue to enlarge? In about 95 per cent of cases the thickening of the heart muscle stops when full growth is completed, usually in the late teens. The exception to this rule is a "late onset " variant of the condition when the changes occur later in life.".
From a cardiologist's point of view, Pompe disease is one of the leading cause of familial (idiopathic) hypertrophic cardiomyopathy in neonatal and paediatric age. GSD II is broadly divided into two onset forms based on the age symptoms soccerdatabase.info by: 1.