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Hereditary sensory and autonomic neuropathy

Also called: Hereditary sensory and autonomic neuropathy, HSAN

Rare inherited nerve diseases causing loss of pain feeling and problems with sweating and blood pressure.

RiskUnnoticed injuries

Overview

People may not feel pain or temperature in their hands and feet, so injuries go unnoticed.

Some types also affect sweating and blood pressure.

Symptoms

Common signs:

  • Can't feel pain

Less common

  • Sweating problems
  • Unnoticed burns or cuts

When to get medical care

Call 911This isn't an emergency by itself. Call 911 for trouble breathing, chest pain, or fainting.
Get care todayNew or worse symptoms, or symptoms with fever.
See a doctor soonSymptoms that last or keep coming back.

Causes

Genes.

Does it spread or run in families?

  • It isn't contagious. You can't catch it from someone else.

Diagnosis

A clinician asks about your symptoms and may order tests.

The exam

A physical exam.

Tests

Tests, if needed:

  • Gene test:

Treatment

Treatment depends on the cause and how severe it is.

Self-care

  • Check skin daily
  • Wear protective shoes
  • Check feet for injuries daily
  • Test bath water with a thermometer

Which doctor treats this

  • Start with your primary care provider (family doctor or internist).
  • They may send you to a neurologist (brain and nerve doctor).

Living with it

  • Keep a simple diary of symptoms, triggers, and medicines to bring to visits.
  • Bring a list of your medicines and questions to each visit.
  • Make your home safe from falls: good lighting, no loose rugs, grab bars.
  • Ask your doctor whether it's safe to drive.
  • Long-term illness can affect mood. Tell your doctor if you feel down or anxious.

Support groups and helplines

Back to school, work, or sports

  • Most people can keep working or going to school.
  • Ask about changes that help, like extra breaks or a flexible schedule. Workers may be covered by the ADA. Students may get a 504 plan.

Children, pregnancy, and older adults

  • Children: Some types start in infancy.

Pregnancy and breastfeeding

  • If you're pregnant or planning to be, tell your prenatal provider about this condition.
  • Don't start or stop any medicine on your own. Some are safe in pregnancy and some need to be changed.
  • Ask before taking any pain reliever. The FDA advises avoiding ibuprofen and naproxen after 20 weeks unless your doctor says to.
  • Breastfeeding: Most medicines are fine, but ask. The NIH LactMed database lists what's known about each one.

For caregivers

  • Go to visits when you can and take notes.
  • Keep a list of medicines, allergies, and doctors in one place.
  • Learn the warning signs that need fast care.
  • Take breaks and ask for help. Caregivers need care too.

Outlook

Careful protection prevents injuries.

Getting ready for your visit

Bring a list of your symptoms and medicines.

What to bring

  • A list of your medicines and supplements
  • Notes on when symptoms started and what makes them better or worse

Questions to ask

  • What's causing this?
  • What treatment do you recommend?

Research studies

Research studies test new ways to find and treat health problems. Some are looking for volunteers. Talk with your doctor before joining one.

Search ClinicalTrials.gov for studies on Hereditary sensory and autonomic neuropathy

Sources

Last updated 2026-11-12.