Living with Exercise-induced hyperinsulinism
A rare inherited condition in which hard exercise causes a sudden surge of insulin and a drop in blood sugar.
Understanding Exercise-induced hyperinsulinism
It usually starts in the teen years or adulthood. The sudden low blood sugar can cause symptoms such as fainting, shakiness, sweating, and confusion.
Signs & symptoms
Symptoms vary from person to person. GARD's summary lists:
- Fainting (syncope)
- Shakiness and nervousness
- Sweating
- Dizziness or light-headedness
- Sleepiness and confusion
- Weakness
Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.
Diagnosis
- 1Talk with your doctor
Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.
- 2See a specialist
Specialists who may be involved include genetic specialists and hormone specialists.
- 3Consider genetic testing
Changes in SLC16A1 are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.
Care & treatment
- Care team
- Genetic specialists (geneticists); Hormone specialists (endocrinologists)
- Expert care
- Ask about multidisciplinary care centers for rare conditions
- 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 Congenital Hyperinsulinism International
- 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
Quick facts
Changes in the SLC16A1 gene cause this condition. It is autosomal dominant, which means a change in one copy of the gene can cause it.
Also known as: eihi; exercise-induced hyperinsulinemic hypoglycemia; hhf7; hyperinsulinemic hypoglycemia, familial, type 7; hyperinsulinism due to monocarboxylate transporter 1 deficiency; hyperinsulinism due to slc16a1 deficiency
Patient organizations
- Congenital Hyperinsulinism InternationalExercise-induced hyperinsulinism · United States
You are more than your diagnosis
Perspectives from people navigating life with Exercise-induced hyperinsulinism.
Explore research for Exercise-induced hyperinsulinism
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- Eligibility is confirmed by the study team
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