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Living with Syndromic X-linked intellectual disability 17

An X-linked condition with delayed development, little or no speech, and no tears.

Understanding Syndromic X-linked intellectual disability 17

Syndromic X-linked intellectual disability 17 (also called intellectual disability-alacrima-achalasia syndrome) is a rare genetic condition.

Children have delayed motor and thinking skills, intellectual disability, and absent or very late speech. They also have alacrima, which means no tears. Some have achalasia, a swallowing problem, and uneven pupil sizes. It looks like Triple A syndrome but always includes intellectual disability. Signs may begin in the newborn or infant years.

Signs & symptoms

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

  • Delayed motor and thinking skills
  • Intellectual disability
  • Little or no speech
  • No tears (alacrima)
  • Swallowing problems (achalasia)
  • Uneven pupil sizes

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, eye disease 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); Eye disease specialists (ophthalmologists); 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 we protect my child's eyes without tears?
What swallowing evaluation or treatment is advised?
Is genetic testing available for our family?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceX-Linked

This condition is X-linked, meaning the gene is on the X chromosome. GARD doesn't list which gene.

GeneticNeurological

Also known as: intellectual disability-alacrima-achalasia syndrome; intellectual disability, x-linked, syndromic 17; mental retardation, x-linked, syndromic 17, x-linked recessive; syndromic x-linked intellectual disability type 17; x-linked intellectual disability with alacrima and achalasia

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Syndromic X-linked intellectual disability 17GARD ID 17326 · 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 Syndromic X-linked intellectual disability 17.

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