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.
1 Constipation is a symptom of a disease or condition. 2  Cause of constipation range from not taking in enough liquids, over poor diet to mechanical issues such as an obstruction in the intestine. 3  Symptoms of constipation are infrequent bowl movement, lower abdominal pain and hard or small stools.