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PubMed This is a summary of 56 peer-reviewed journal articles Updated
Neurosurgery

Hydranencephaly: A Guide for Parents and Caregivers

At a Glance

Hydranencephaly is a rare biological condition where a baby's cerebral hemispheres are replaced by fluid, though the brainstem remains intact. Care focuses on managing fluid pressure through surgery or prioritizing comfort through palliative care, alongside treating associated symptoms.

Receiving a diagnosis of hydranencephaly for your baby is an overwhelming experience. You are likely feeling a mix of intense fear, grief, and confusion. This guide was created to help you understand your child’s diagnosis, navigate the complex medical decisions ahead, and find a path that honors your family’s values.

What You Need to Know First

  • It is not your fault. In the vast majority of cases, hydranencephaly is the result of a random biological event during pregnancy. It could not have been predicted or prevented.
  • Your baby may look and act “typical” right now. Because the lower part of the brain (the brainstem) is usually intact, many newborns with hydranencephaly can breathe, swallow, and move normally at first.
  • You have choices. There is no single “right” way to care for a child with this condition. You have the right to choose the path—whether surgical or focused purely on comfort—that feels best for your family.

This guide is broken down into five distinct sections to help you process information at your own pace.

Inside This Guide

Biology and Diagnosis
Learn exactly what hydranencephaly is, how it differs from similar conditions like severe hydrocephalus, and how doctors confirm the diagnosis.

Symptoms and Associated Conditions
Understand the physical, neurological, and “hidden” hormonal symptoms (like Central Diabetes Insipidus) your child may experience.

Care Decisions: Surgery and Comfort Paths
Explore your options for managing fluid pressure, including VP shunts and CPC, as well as the active, supportive choice of palliative comfort care.

Prognosis and the Reality of Long-Term Care
An honest, compassionate look at life expectancy, daily care needs like feeding tubes, and how to prioritize your child’s quality of life.

Building Your Care Team
A guide to the specialists who will help care for your child, including neurosurgeons, endocrinologists, and palliative care partners.

In this guide

5 chapters

01

Understanding Hydranencephaly: Biology and Diagnosis

Learn what a hydranencephaly diagnosis means for your baby. Understand the causes, how it differs from hydrocephalus, and what to expect from MRI results.

02

Symptoms and Associated Conditions of Hydranencephaly

Learn about the physical and neurological symptoms of hydranencephaly in infants. Understand signs like macrocephaly, seizures, and endocrine conditions.

03

Care Decisions: Surgery and Comfort Paths

Explore care options for infants with hydranencephaly. Understand the benefits and risks of VP shunts, CPC surgery, and palliative comfort care paths.

04

Prognosis and the Reality of Long-Term Care

Understand the prognosis and long-term care for a child with hydranencephaly. Learn about life expectancy, managing complex needs, and focusing on comfort.

05

Building Your Care Team

Learn about the essential specialists needed for your child's hydranencephaly care team, including neurologists, neurosurgeons, and palliative care experts.

Common questions in this guide

Is my baby's hydranencephaly my fault?
No. In the vast majority of cases, hydranencephaly is the result of a random biological event during pregnancy. It is not caused by anything you did or didn't do, and it could not have been predicted or prevented.
Why does my baby with hydranencephaly act like a typical newborn?
Many newborns with hydranencephaly initially breathe, swallow, and move normally because the lower part of the brain, called the brainstem, is usually intact. This part of the brain controls these basic, automatic functions.
What are the treatment options for hydranencephaly?
Care options depend on your family's goals and can range from surgical interventions, like a VP shunt to manage fluid pressure, to palliative comfort care. There is no single right way to care for a child with this condition.
What doctors will be on our care team for hydranencephaly?
Your baby's care team will typically include pediatric neurosurgeons to manage brain fluid, endocrinologists to treat hidden hormonal issues, and pediatric palliative care specialists who focus entirely on your child's comfort and quality of life.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.Who is the best person on our medical team to contact when I feel overwhelmed by the information we've been given?
  2. 2.Are there any rare-disease or hydranencephaly parent support groups you recommend we connect with?
  3. 3.Can you help us schedule an initial meeting with a pediatric palliative care specialist to focus on my baby's comfort?

Questions For You

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This guide is for educational purposes to help parents understand hydranencephaly. It does not replace professional medical advice. Always consult your pediatric neurosurgeon and palliative care team regarding your child's specific care plan.

Get notified when new evidence is published on Hydranencephaly.

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