Neurofibromatosis type I

type of neurofibromatosis disease

Neurofibromatosis type 1 (NF1) is a genetic condition that causes tumours (areas of not normal growth) to grow along your nerves. The tumours are usually non-cancerous (benign) but may cause a range of symptoms. NF1 is a condition you're born with, although some symptoms develop gradually over many years. The severity of the condition can vary considerably from person to person.

Cafe-au-lait spot

In most cases, the skin is affected, causing symptoms such as:

  • birthmarks known as café au lait spots, which are light or dark brown patches that can be anywhere on the body
  • soft, non-cancerous tumours on or under the skin (neurofibromas)
  • clusters of freckles in unusual places – such as the armpits, groin and under the breast
  • problems with the bones, eyes and nervous system
  • Certain health problems are often associated with NF1, such as learning difficulties. Less commonly, NF1 is associated with a type of cancer known as malignant peripheral nerve sheath tumours.

Treatment

change
  • surgery – to remove tumours and treat problems with bones
  • medicine – to control secondary conditions, such as high blood pressure
  • physiotherapy
  • psychological support
  • pain management

Careful monitoring and treatment can help people with NF1 live a full life. However, there's a risk of developing serious problems, such as certain types of cancer, that can reduce life expectancy.