Does cystic fibrosis usually cause many symptoms?

Yes: The primary symptoms are pulmonary and digestive. Chronic lung disease and recurrent lung infections start early in life. Intestinal malapsortion because of digestive enzyme deficiency also occurs early. Other symptoms include meconium illius in the perinatal period, growth failure in childhood and a variety of symptoms in the second and third decades of life including diabetes.

Yes.: Most of the symptoms come from the pulmonary complications of chronic respiratory insufficiency and infections. Other symptoms are gastrointestinal. CF involves many organs.