Alpha-mannosidosis

There are three different forms of Alpha-mannosidosis. Alpha-mannosidosis type 1 is a mild form of the condition where people usually show signs after 10 years of age. Alpha-mannosidosis type 2 is a moderate form of the condition where people usually show signs before age 10. Alpha-mannosidosis type 3 is the most severe form of the condition where people usually die before birth or at a very young age. Because different people with Alpha-mannosidosis have differences in the severity of their disease, it is difficult to know exactly at which point of early childhood a person may start showing signs of this condition if they have Alpha-mannosidosis type 1 or type 2.