When Chronic Constipation Tells a Deeper Story: A Case of Hirschsprung’s Disease


A 7-year-old male presented with long-standing gastrointestinal concerns that had been overlooked since early childhood.

Chief Complaints:

  • Fever (on and off) for 3–4 months

  • Abdominal pain for 1 week

  • Altered bowel habits since birth

  • Poor weight gain

Clinical Presentation:
The patient had a history of chronic constipation since birth, associated with poor appetite and failure to thrive. On examination, he appeared undernourished with signs suggestive of systemic involvement.

Key Investigations & Findings:

  • Hematology: Severe microcytic hypochromic anemia (Hb: 7.2 g/dL)

  • Inflammatory markers: Elevated CRP

  • Liver function: Elevated bilirubin, SGOT, SGPT

  • Imaging (CECT Abdomen):

    • Narrowing of distal rectum and anal canal

    • Dilatation of proximal colon (rectum, sigmoid, descending colon)

  • Microbiology: Reactive for Salmonella typhi

These findings indicated a functional obstruction with proximal bowel dilatation.

Clinical Reasoning:
Chronic constipation since birth, combined with radiological evidence of a transition zone (narrow distal segment with proximal dilatation), strongly suggested a congenital motility disorder rather than a simple gastrointestinal condition.

Final Diagnosis:
Hirschsprung’s Disease with associated severe anemia and malnutrition

Understanding the Disease (Simplified):
Hirschsprung’s disease is a congenital condition characterized by the absence of ganglion cells in the distal intestine. This leads to failure of normal peristalsis, causing functional bowel obstruction.

As a result, stool accumulates proximal to the affected segment, leading to chronic constipation, abdominal distension, and growth issues.

Management Approach:

1. Medical Management (Supportive):

  • IV fluids for stabilization

  • Broad-spectrum antibiotics (Amoxicillin-clavulanate, Gentamicin, Metronidazole)

  • Lactulose for constipation

  • Nutritional and hematinic support (iron, folic acid, vitamin B12)

2. Monitoring:

  • Renal function (due to nephrotoxic antibiotics)

  • Liver function (due to elevated bilirubin and enzymes)

  • Inflammatory markers

3. Definitive Treatment:
Surgical removal of the aganglionic segment (pull-through procedures such as Duhamel or Soave), which is the standard and curative approach.

Clinical Insight:
Although Hirschsprung’s disease is typically diagnosed in infancy, delayed diagnosis—as seen in this case—can occur and may present with chronic constipation, malnutrition, and systemic complications. Early recognition is critical to prevent severe outcomes like enterocolitis or bowel perforation.

Pharmacological Perspective:

  • Antibiotics were used to prevent and manage potential infections due to bowel stasis.

  • Lactulose helped in reducing constipation by osmotic action.

  • Hematologic support addressed severe anemia, which can worsen overall prognosis if untreated.

This case highlights the importance of rational drug use alongside surgical planning.

What This Case Taught Me:
This experience reshaped my understanding of “chronic constipation.” What may appear as a common complaint can sometimes reflect a lifelong underlying pathology.

It emphasized:

  • The importance of history since birth

  • The value of radiological correlation

  • The need for early suspicion of congenital disorders

Take-Home Points:

  • Persistent constipation since birth should never be ignored

  • Always consider structural or congenital causes in chronic cases

  • Imaging plays a crucial role in identifying the transition zone

  • Definitive management of Hirschsprung’s disease is surgical

  • Early diagnosis significantly improves outcomes

Reflection:
As a PharmD student, this case reinforced my role not just in medication management but also in clinical reasoning and multidisciplinary care. It reminded me that behind every “common symptom” lies a possibility worth exploring.




References & Learning Sources:
This case is based on clinical observations during hospital postings. Additional insights and disease understanding have been supported using established medical literature and published case reports on Hirschsprung’s disease.

- Diya


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