1 Examples of causes of anal itching include hemorrhoids, anal fissures, pinworms, foods, medications, and other diseases or conditions. 2  Additional symptoms associated with anal itching include burning and pain if the anal skin is traumatized by scratching.
Rarely, infant constipation is caused by an underlying condition, such as Hirschsprung's disease, hypothyroidism or cystic fibrosis. If infant constipation persists despite dietary changes or is accompanied by other signs or symptoms â such as vomiting or rectal bleeding â contact your baby's doctor.
Symptoms of constipation include: 1  Fewer than three bowel movements per week. 2  Small, hard, dry stools that are difficult or painful to pass. 3  The need to strain excessively to have a bowel movement.  A feeling that your rectum is not empty after a bowel 1  movement. Frequent use of enemas, laxatives or suppositories.