 [ Symptoms ] what causes bleeding in the first trimester of pregnancy [ Disease ] symptoms of cystic fibrosis are usually caused by the production of thick sticky mucus symptoms vary from person to person and are not always obvious in childhood early signs and symptoms symptoms of cystic fibrosis in a baby or young child may include a blocked small intestine at birth called a meconium plug or meconium ileus salty sweat or skin wanting to eat more or less having little energy or losing weight unusual bowel movements this may include diarrhea that does not go away large greasy stools very smelly stools or constipation if the intestines become blocked the child is belly may stick out and the child may not be able to have a bowel movement breathing problems or getting tired easily while playing a cough that does not go away or wheezing later signs and symptoms over time symptoms may get worse and result in coughing up mucus that sometimes has blood in it difficulty exercising or not being able to exercise rectal prolapse when part of the rectum protrudes from the anus additional symptoms may develop during late childhood or early adulthood including clubbing rounding and flattening of the fingers growths  polyps  in the nose or sinuses not being able to have children  infertility  webmd medical reference from healthwise this information is not intended to replace the advice of a doctor healthwise disclaims any liability for the decisions you make based on this information © 1995 2011 healthwise incorporated healthwise healthwise for every health decision and the healthwise logo are trademarks of healthwise incorporated