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Living with Intellectual disability-dysmorphism-hypogonadism-diabetes mellitus syndrome

A rare syndrome with mild to moderate intellectual disability, facial differences, low sex hormones, and diabetes.

Understanding Intellectual disability-dysmorphism-hypogonadism-diabetes mellitus syndrome

Intellectual disability-dysmorphism-hypogonadism-diabetes mellitus syndrome is a rare genetic syndrome with mild to moderate intellectual disability.

Other features are facial differences, low sex hormone function (hypergonadotrophic hypogonadism), type 1 diabetes, and epilepsy. GARD notes there have been no further descriptions in the medical literature since 1990. It begins in childhood.

Signs & symptoms

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

  • Mild to moderate intellectual disability
  • Low testosterone
  • Absent breast tissue
  • Large lower jaw
  • Notch in the nostril (cleft ala nasi)
  • Low muscle tone in infancy

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, genetic specialists, hormone specialists and urinary and male reproductive system 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

    Resolve: The National Infertility Association may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Hormone specialists (endocrinologists); Urinary and male reproductive system specialists (urologists)
Expert care
Expert lists: Resolve: The National Infertility Association
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 Resolve: The National Infertility Association
  • 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 are diabetes and hormone levels managed?
How can seizures be managed?
Which specialists should be on the care team?

Quick facts

Symptoms usually startChild

GARD describes this as a genetic syndrome. It doesn't list a gene or inheritance pattern.

GeneticNeurologicalEndocrine

Also known as: intellectual disability, craniofacial dysmorphism, hypogonadism, diabetes mellitus syndrome; mental retardation syndrome belgian type

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Intellectual disability-dysmorphism-hypogonadism-diabetes mellitus syndromeGARD ID 9811 · 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 Intellectual disability-dysmorphism-hypogonadism-diabetes mellitus syndrome.

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