What to expect if I have Niemann-Pick disease  (Outlook/Prognosis)?
Type A Niemann-Pick is a severe disease, which generally leads to death by age 2 or 3.
Those with Type B may live into late childhood or adulthood.
A child who shows signs of Type C before age 1 may not live to school age. Those who show show symptoms after entering school may live into their mid-to-late teens, with a few surviving into the 20s. </s>