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Living with Pitt-Hopkins-like syndrome

A rare genetic condition with severe intellectual disability, no speech, breathing episodes and early-onset seizures.

Understanding Pitt-Hopkins-like syndrome

Pitt-Hopkins-like syndrome is a rare genetic condition that causes severe intellectual disability and a lack of speech.

Motor development is normal or only mildly delayed. People may have episodes of unusual breathing, early-onset seizures and a wide mouth. Unusual sleep-wake cycles, autism-like behavior and repeated movements often occur too.

Signs & symptoms

Symptoms vary from person to person. GARD describes these features:

  • Severe intellectual disability
  • No speech
  • Episodes of unusual breathing
  • Seizures starting early in life
  • Unusual sleep-wake cycles
  • Autism-like behavior and repeated movements

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Pitt Hopkins Research Foundation may keep lists of experts for this condition.

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
Expert care
Expert lists: Pitt Hopkins Research Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Pitt Hopkins Research Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Would genetic testing help find the cause?
How can we manage the breathing episodes and seizures?
Which therapies could help with communication and sleep?

Quick facts

GARD says this is a genetic condition but doesn't name a gene or describe an inheritance pattern.

Also known as: pthsl

Patient organizations

Source: NIH GARD · Pitt-Hopkins-like syndromeGARD ID 11967 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Pitt-Hopkins-like syndrome.

Explore the Pitt-Hopkins-like syndrome blog

Explore research for Pitt-Hopkins-like syndrome

Explore actively recruiting Pitt-Hopkins-like syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Pitt-Hopkins-like syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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