Hirschsprung Disease Symptoms in CHH: What to Watch For

Children born with cartilage-hair hypoplasia (CHH) have an increased risk of developing Hirschsprung disease, a condition affecting the large intestine (colon) ^[1]. Hirschsprung disease occurs because the lower part of the gut is missing vital nerve cells (ganglion cells) needed to push stool through the bowel ^[2][3]. Without these nerve cells, the muscles in the intestine cannot relax, causing severe blockages.

Because of the link between CHH and Hirschsprung disease, it is essential for parents of newborns with CHH to know exactly what signs to watch for in the first days and weeks of life. While many cases are identified shortly after birth, severe chronic constipation might not become obvious until the baby is a few weeks old.

Key Signs to Watch For

If your newborn experiences any of the following symptoms, they require immediate medical attention. These are classic red flags for Hirschsprung disease ^[4][5]:

• Failure to Pass Meconium: The most common early sign is if your baby does not pass their first dark, sticky stool (called meconium) within the first 48 hours of life ^[5][6].
• A Noticeably Swollen Belly: You may notice your newborn’s abdomen becoming unusually round, visibly distended, or firm to the touch ^[4].
• Vomiting Green Bile: While normal spit-up is common in newborns, vomiting a green or yellow-green liquid (bile) is a sign of a severe bowel obstruction and is a medical emergency ^[7].
• Severe Constipation: If your baby struggles significantly to have bowel movements, do not attempt to use a rectal thermometer or suppository to stimulate them, as this can be dangerous; instead, contact your doctor immediately ^[4].

Why Prompt Action Matters

These symptoms indicate that stool and gas are trapped in the bowel due to the missing nerve cells ^[2]. A severe blockage can quickly lead to a dangerous infection of the intestines called enterocolitis, which is the most serious complication of Hirschsprung disease ^[8].

If you observe any of the symptoms above, do not wait—contact your pediatrician or go to the nearest emergency room immediately. When you arrive, be sure to explicitly tell the triage nurse and doctor: “My baby has cartilage-hair hypoplasia, which puts them at high risk for Hirschsprung disease.” This ensures they do not mistake a serious obstruction for normal newborn constipation.

While these symptoms constitute a medical emergency, rest assured that Hirschsprung disease is a well-understood condition that can be successfully treated, usually with surgery.