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Living with Neurofibromatosis, type 1

A genetic condition with café-au-lait skin spots and tumors that grow along nerves, often noticed in early childhood.

Understanding Neurofibromatosis, type 1

Neurofibromatosis type 1 is a genetic condition with changes in skin color and tumors that grow along nerves in the skin, brain, and other parts of the body.

Signs vary widely. Almost everyone has multiple café-au-lait spots (flat, darker patches of skin) starting in early childhood. Freckles in the underarms and groin appear later. Most adults develop neurofibromas, which are non-cancerous tumors on or under the skin or along nerves. Some develop cancerous nerve tumors. Lisch nodules on the iris don't affect vision. Optic gliomas may reduce vision.

Signs & symptoms

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

  • Café-au-lait spots
  • Freckles in the armpits and groin
  • Neurofibromas (lumps under the skin)
  • Lisch nodules in the eyes
  • Attention deficit and learning differences
  • Headaches

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 bone and joint specialists, brain and nervous system specialists, cancer specialists and eye disease specialists.

  3. Consider genetic testing

    Changes in NF1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Children's Tumor Foundation, Neurofibromatosis Midwest and Neurofibromatosis Network may keep lists of experts for this condition.

Care & treatment

Care team
Bone and joint specialists (orthopedists or orthopedic surgeons); Brain and nervous system specialists (neurologists); Cancer specialists (oncologists); Eye disease specialists (ophthalmologists)
Expert care
Expert lists: Children's Tumor Foundation, Neurofibromatosis Midwest, Neurofibromatosis Network
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 Children's Tumor Foundation and other patient organizations
  • 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
Should family members have genetic testing for NF1?
How often should my eyes and skin be checked?
Which specialists should be on my care team?

Quick facts

Symptoms usually startNewborn and as an Infant
InheritanceAutosomal Dominant
GenesNF1

GARD lists changes in the NF1 gene. The condition is autosomal dominant, which means one changed copy of the gene can be enough to cause it.

GeneticNeurologicalKidneySkin

Also known as: multiple non-ossifying fibromatosis; neurofibromatosis 1; neurofibromatosis type 1; neurofibromatosis type i; neurofibromatosis, peripheral type; neurofibromatosis, type i

Patient organizations

Source: NIH GARD · Neurofibromatosis, type 1GARD ID 7866 · 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 Neurofibromatosis, type 1.

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