11. Familial dysautonomia is a genetic disorder that affects the development and survival of certain nerve cells. 12. The body's inability to regulate the blood pressure can be a type of dysautonomia . 13. Shelton is testing blood samples O'Brien sent her from about 100 dogs diagnosed with dysautonomia . 14. And if he had not received a letter from the Dysautonomia Foundation asking him to find the gene? 15. Fatigue and reduced exercise tolerance are prominent symptoms of both conditions, and dysautonomia may underlie both conditions. 16. It is unclear how mutations in the IKBKAP gene lead to the signs and symptoms of familial dysautonomia . 17. Nearly all individuals with familial dysautonomia have two copies of the same IKBKAP gene mutation in each cell. 18. And members of the Dysautonomia Foundation, which has financed his work, are congratulating themselves on their perspicacity. 19. Because dysautonomia has so many symptoms, it can be hard for veterinarians to diagnose when it first appears. 20. Symptomatic treatment is available for many symptoms associated with dysautonomia , and some disease processes can be treated directly.