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Living with Hot water reflex epilepsy

A rare neurological condition in which seizures start after hot water touches the head.

Understanding Hot water reflex epilepsy

Hot water reflex epilepsy is a rare neurological condition in which hot water on the head triggers seizures.

Seizures can be generalized or focal. They follow dipping the head in hot water or pouring hot water over the head. Rarely, tonic-clonic seizures have been reported. It can begin at any time in life.

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. Its summary describes:

  • Seizures after hot water on the head
  • Focal seizures
  • Generalized seizures

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 and seizure and epilepsy specialists.

  3. Consider genetic testing

    Changes in SLC1A1 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

    Epilepsy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Seizure and epilepsy specialists (epileptologist)
Expert care
Expert lists: Epilepsy 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 Epilepsy 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
What bathing habits are safest for me?
Would seizure medicine or an EEG test be helpful?
Would genetic testing for SLC1A1 help our family?

Quick facts

Symptoms usually startany time in life
InheritanceAutosomal Dominant
GenesSLC1A1

Changes in the SLC1A1 gene cause this condition. It is autosomal dominant, meaning one changed copy of the gene can be enough to cause it.

GeneticNeurological

Also known as: epilepsy, hot water; hot water epilepsy

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Hot water reflex epilepsyGARD ID 17028 · 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 Hot water reflex epilepsy.

Explore the Hot water reflex epilepsy blog

Explore research for Hot water reflex epilepsy

Explore actively recruiting Hot water reflex epilepsy studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Hot water reflex epilepsy 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

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

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