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Living with Toluene embryopathy

A condition in a child caused by exposure to toluene before birth, affecting growth, learning, and facial features.

Understanding Toluene embryopathy

Toluene embryopathy is a condition that affects a baby's brain development and growth because of exposure to toluene during pregnancy.

Features include early birth, low birth weight, distinctive facial features, a small head, language and learning problems, hyperactivity, vision problems, and slower growth after birth. GARD says it can overlap with fetal alcohol syndrome.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Small head (microcephaly)
  • Global developmental delay
  • Speech and language problems
  • Low muscle tone (hypotonia)
  • Small lower jaw (micrognathia)
  • Short stature

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

    Specialists who may be involved include ear, nose, and throat specialists and genetic specialists.

  3. Ask which tests can help

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

  4. Connect with expert centers

    World Craniofacial Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Ear, nose, and throat specialists (otolaryngologists); Genetic specialists (geneticists)
Expert care
Expert lists: World Craniofacial 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 World Craniofacial Foundation and other patient organizations
  • 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
What therapies could help with speech and development?
Which specialists should see my child for growth and vision?
How is this different from fetal alcohol syndrome?

Quick facts

Symptoms usually startduring Pregnancy and as a Newborn

GARD says it is caused by exposure to toluene before birth, from incidental work exposure or solvent use during pregnancy.

Genetic

Also known as: fetal toluene syndrome; foetal toluene syndrome

Patient organizations

Source: NIH GARD · Toluene embryopathyGARD ID 18751 · 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 Toluene embryopathy.

Explore the Toluene embryopathy blog

Explore research for Toluene embryopathy

Explore actively recruiting Toluene embryopathy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Toluene embryopathy 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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