When Lacey Williams (pictured) was 4, she received a medical diagnosis that changed her life – and just may have saved it. She was diagnosed with hereditary angioedema, a rare, potentially fatal swelling disorder affecting around 6,000 people in the United States. HAE patients have a defect in the gene that controls a blood protein called C1 inhibitor. “My dad has it,” Williams said. “When my brother was born my parents decided to get us both tested. My brother and I both have it.” HAE is characterized by debilitating swelling attacks that can occur at anytime, anywhere on the body/Cindy Hval, SR. More here. (SR photo: Jesse Tinsley)

Question: Do you know your family's medical history?