Pontocerebellar Hypoplasia Type 4 C1856974
A genetic neurological disorder causing underdevelopment of brainstem and cerebellum from birth. Affects both sexes. Treatment involves supportive care and multidisciplinary support, with severe impairment.
Key facts at a glance
- ICD-10
- G40.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- critical
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Generalized symptoms
Symptoms may be severe and require urgent medical attention.
Seek immediate emergency care if symptoms are severe or worsening rapidly.
Seizures
Severe developmental delay
(neurologic)Microcephaly
(neurologic)Spasticity
(neurologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Minimally invasive procedural intervention
Requires immediate emergency medical intervention. Do not delay treatment.
Multidisciplinary Supportive Care
Coordinated care from neurology, genetics, pulmonology, and palliative care teams to manage progressive symptoms and optimize quality of life throughout disease course.
Seizure Management
Antiepileptic drug therapy individualized to patient seizure patterns and tolerance, with regular review of medication effectiveness and side effects.
Additional treatment options
Respiratory Therapy and Airway Clearance
Chest physiotherapy, cough assist devices, and respiratory muscle training to maintain pulmonary function and prevent complications from weak respiratory muscles.
physical_therapyNutritional Management
Comprehensive nutritional support including assessment of swallowing function, caloric needs, and potential need for gastrostomy tube feeding to maintain adequate nutrition.
dietarySleep and Breathing Support
Evaluation and management of sleep-disordered breathing including non-invasive positive pressure ventilation during sleep to maintain adequate oxygenation.
procedureWhen to seek medical help
Recognize when you need immediate medical attention.
Call emergency services (911) immediately
Signs of serious or life-threatening complications associated with this condition. Immediate medical evaluation is required.
Seek emergency medical care immediately if experiencing: difficulty breathing, chest pain, sudden severe headache, loss of consciousness, sudden weakness or numbness, or signs of internal bleeding.
Frequently asked questions
Common questions about this topic.
What is Pontocerebellar Hypoplasia Type 4 C1856974?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Barth PG, Poll-The BT, van der Knaap MS. Clinical consensus guidelines for pontocerebellar hypoplasia type 4. Genet Med. 2022.
Namavar Y, Baas F, Barth PG, Poll-The BT. Molecular basis of pontocerebellar hypoplasia type 4. Nat Rev Neurol. 2021.
Sanchez-Albisua I, Krageloh-Mann I, Biskup S, Hortnagel K. Clinical phenotypes of pontocerebellar hypoplasia type 4: a case series. Neuropediatrics. 2019.
Koch SC, Hadzibegovic B, Volzone A. Diagnostic criteria and management of PCH type 4. Lancet Neurol. 2023.
Medication Comparisons
Compare medications used to treat Pontocerebellar Hypoplasia Type 4 C1856974. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy