Skip to content
knowrare
HealthSignal
Your condition community

Living with SUNCT syndrome

A rare headache disorder with short, sharp pain on one side of the face along with a red, tearing eye.

Understanding SUNCT syndrome

SUNCT syndrome is a rare primary headache disorder with pain on one side of the face along with red, watery eyes.

The pain follows the trigeminal nerve, a facial nerve, and happens on one side. It occurs together with signs such as a red eye and tearing on the same side. It most often starts in adulthood.

Signs & symptoms

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

  • Pain on one side of the face (trigeminal pain)
  • Red eye
  • Excess tears
  • Drooping upper eyelid
  • Runny nose
  • Restlessness or agitation

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.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    National Headache Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists)
Expert care
Expert lists: National Headache Foundation
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 National Headache Foundation
  • 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 can SUNCT be told apart from other headaches?
Which treatments can prevent attacks?
Should I keep a diary of attacks to bring to visits?

Quick facts

Symptoms usually startAdult

GARD doesn't describe a cause for this condition yet.

Neurological

Also known as: short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing; short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing syndrome; short-lasting, unilateral, neuralgiform headache attacks with conjunctival injection and tearing; sunct (short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing) syndrome; sunct headache

Patient organizations

Source: NIH GARD · SUNCT syndromeGARD ID 9257 · 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 SUNCT syndrome.

Explore the SUNCT syndrome blog

Explore research for SUNCT syndrome

Explore actively recruiting SUNCT syndrome studies with HealthSpark.

HealthSpark

Find actively recruiting studies for SUNCT syndrome with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

Powered by HealthSpark, our AI chat helper

I can help you find recruiting SUNCT syndrome studies. Enter a ZIP code, address or city below and I'll look within 50 miles.

Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

Get Signals for SUNCT syndrome

Stay in the loop with community stories and updates from medical researchers.

HealthStoryfor SUNCT syndrome

Create a living journal that talks back

HealthStory evolves private journaling with a living AI journal that talks back and asks thoughtful questions, helping you capture your SUNCT syndrome experiences more deeply and prepare for better conversations with your doctors and care team.

Start your journal

Your journal is private. Sharing your story publicly is a separate choice, made with Share your story above.