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Living with Cryptorchidism-arachnodactyly-intellectual disability syndrome

A rare syndrome with severe intellectual disability, weak muscles, stiff joints, long slender fingers, and genital differences.

Understanding Cryptorchidism-arachnodactyly-intellectual disability syndrome

Cryptorchidism-arachnodactyly-intellectual disability syndrome is a rare syndrome with many differences present from early life.

Features include delayed development, severe intellectual disability, very underdeveloped muscles with little fat under the skin, stiff joints, spine and chest differences, and a smaller lung on one side. People have long slender fingers (arachnodactyly) and genital differences such as undescended testes. Repeated respiratory infections occur. GARD notes there have been no further descriptions in the medical literature since 1970.

Signs & symptoms

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

  • Intellectual disability
  • Low muscle tone (hypotonia)
  • Long slender fingers (arachnodactyly)
  • Curved spine (scoliosis, kyphosis)
  • Repeated respiratory infections
  • Genital differences, such as undescended testes

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
Would genetic testing help our family?
How can we lower the risk of breathing infections?
Which specialists and therapies should be involved?

Quick facts

Symptoms usually startNewborn and as an Infant

GARD says changes in genes cause this condition. It doesn't name a gene.

GeneticNeurological

Also known as: cryptorchidism, arachnodactyly, intellectual disability syndrome; van benthem driessen hanveld syndrome; van benthem-driessen-hanveld syndrome

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · Cryptorchidism-arachnodactyly-intellectual disability syndromeGARD ID 860 · 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 Cryptorchidism-arachnodactyly-intellectual disability syndrome.

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