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Living with Severe intellectual disability-epilepsy-anal anomalies-distal phalangeal hypoplasia

A genetic condition that affects thinking and learning, causes seizures, and changes how the fingers, toes, face and anus form.

Understanding Severe intellectual disability-epilepsy-anal anomalies-distal phalangeal hypoplasia

Severe intellectual disability-epilepsy-anal anomalies-distal phalangeal hypoplasia is a rare genetic syndrome that affects the brain, hands, feet and anus.

People with this condition have severe intellectual disability and seizures (epilepsy). The tips of the fingers and toes are small or missing, and the anus sits further forward than usual. Other features can include a cleft palate, low muscle tone, a heart wall opening, and distinctive facial features. Signs begin in the newborn and infant period.

Signs & symptoms

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

  • Severe intellectual disability
  • Seizures
  • Small or missing tips of fingers and toes
  • Anus placed further forward than usual
  • Cleft palate
  • Low muscle tone (hypotonia)

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
Which specialists should be part of my child's care team?
How are the seizures best monitored and managed?
Would genetic testing help us understand the chances for future children?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Recessive

GARD says this condition is passed down when a child inherits a changed copy of a gene from each parent (autosomal recessive). It appears to involve two regions of DNA, one on chromosome 1 and one on chromosome 14.

GeneticNeurological

Also known as: severe intellectual disability, epilepsy, anal anomaly, distal phalangeal hypoplasia syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Severe intellectual disability-epilepsy-anal anomalies-distal phalangeal hypoplasiaGARD ID 19247 · 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 Severe intellectual disability-epilepsy-anal anomalies-distal phalangeal hypoplasia.

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