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Living with X-linked intellectual disability, Pai type

A rare X-linked condition with severe learning disability, seizures, and repeated lung infections, mainly in males.

Understanding X-linked intellectual disability, Pai type

X-linked intellectual disability, Pai type, is a rare condition with global developmental delay, severe intellectual disability, and seizures.

Affected males also have recurrent lower respiratory tract infections. Mild facial features, an unsteady walk, brisk reflexes, delayed bone age, and tapering fingers have been reported. Signs usually begin in infancy or childhood.

Signs & symptoms

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

  • Global developmental delay
  • Severe intellectual disability
  • Delayed speech and language
  • Seizures
  • Repeated respiratory infections
  • Slow growth before birth

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 brain and nervous system specialists and genetic specialists.

  3. Ask which tests can help

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

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists)
Expert care
Ask about multidisciplinary care centers for rare conditions
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 rare disease patient organizations for support
  • 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
How can lung infections be prevented and treated?
How are the seizures managed?
Is genetic counseling available for our family?

Quick facts

Symptoms usually startInfant and as a Child
InheritanceX-Linked

GARD says the gene has been mapped to the q28 region of the X chromosome, and the condition follows X-linked inheritance.

GeneticNeurological

Also known as: x-linked intellectual disability pai type

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · X-linked intellectual disability, Pai typeGARD ID 19056 · 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 X-linked intellectual disability, Pai type.

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Explore actively recruiting X-linked intellectual disability, Pai type studies with HealthSpark.

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  • Recruiting studies from ClinicalTrials.gov
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  • 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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