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Living with Diphtheria

A bacterial infection that mostly affects the mouth, throat, and nose and can affect the heart and nerves.

Understanding Diphtheria

Diphtheria is a bacterial infection caused by Corynebacterium diphtheriae.

It usually involves the mouth, throat, and nasal cavity. People develop membranes in the affected areas and have signs of an upper respiratory infection. The diphtheria toxin may cause inflammation of the heart muscle (myocarditis), nerve inflammation (polyneuritis), and other effects throughout the body.

Signs & symptoms

GARD doesn't list a detailed symptom list. Based on its summary, features include:

  • Signs of an upper respiratory infection
  • Membranes in the mouth, throat, or nose
  • Inflammation of the heart muscle (myocarditis)
  • Nerve inflammation (polyneuritis)

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

    Your doctor may refer you to a specialist who knows rare conditions.

  3. Ask which tests can help

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

Care & treatment

Care team
A doctor familiar with rare conditions, plus specialists as needed
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 rare disease patient organizations for support
  • 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 is diphtheria confirmed and treated?
How can we protect close contacts, and is my vaccination up to date?
Should the heart and nerves be monitored?

Quick facts

Symptoms usually startany time in life

It is caused by the bacterium Corynebacterium diphtheriae. The diphtheria toxin can cause effects throughout the body.

Infectious

Also known as: corynebacterium infection

Patient organizations

Rare-disease groups that can help

Source: NIH GARD · DiphtheriaGARD ID 1875 · 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 Diphtheria.

Explore the Diphtheria blog

Explore research for Diphtheria

Explore actively recruiting Diphtheria studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Diphtheria 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 Diphtheria 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.

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HealthStoryfor Diphtheria

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

Start your Diphtheria journal

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