How much personality can one three-year-old have? Here's your answer. Ryan Schultz, 3, who has been diagnosed with Duchenne muscular dystrophy, is the center of attention, in this family photo. (The kid is a total charmer.) His father, David, left, has started a foundation called Ryan's Quest, "to increase awareness of Duchenne muscular dystrophy with the purpose of allocating funds for research that has the greatest potential of finding a cure or treatment for this disease." Most patients are wheelchair dependent by age 12. Life expectancy varies from early teens to age mid 30s. Ryan's mom, Maria is at right feeding Ryan's one-month-old brother, Mason.