Diphtheria is a life-threatening infection that spreads easily. The infection most commonly attacks the tonsils, throat, and nose.
Diphtheria is caused specific bacteria. The infection spreads from person to person through contact with:
Factors that may increase your chance of diphtheria include:
Signs and symptoms of diphtheria usually begin 2 to 5 days after a person is infected. The most obvious sign of diphtheria is a gray covering on the back of the throat. The covering can detach and block the airway. If left untreated, the bacteria can produce a poison that spreads through the body causing damage to the heart, nerves, and kidneys.
Not everyone who gets diphtheria shows signs of illness, though they may be able to infect others.
Swollen Glands in the Neck
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You will be asked about your symptoms and medical history. A physical exam will be done. Diphtheria will be suspected if the throat and tonsils are covered with a gray membrane.
Your doctor may need to test to confirm the diagnosis. This can be done by collecting a swab for culture or a tissue sample.
Diphtheria is a medical emergency that requires immediate care from your doctor. The sooner it is treated, the better the outcome will be.
Talk with your doctor about the best treatment plan for you. If your doctor suspects diphtheria, your treatment will start right away, even before the lab results are returned. Treatment options include the following:
The vaccine for diphtheria is safe and is effective at preventing the disease. All children with few exceptions should receive the DTaP vaccine series. This protects against diphtheria, tetanus , and pertussis . A single dose of Tdap vaccine is recommended for children aged 11 years or older, even if they did not receive the DTaP. A booster should be given every 10 years after, or after exposure to tetanus if necessary.
Despite the availability of vaccines to prevent diphtheria, cases are on the rise. If you or your child has not been fully vaccinated, talk to the doctor. There are catch-up schedules available.
Centers for Disease Control and Prevention
National Institute of Allergy and Infectious Diseases
Caring for Kids—Canadian Paediatric Society
Diphtheria. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T114762/Diphtheria. Updated September 8, 2015. Accessed September 27, 2016.
Diphtheria. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/vaccines/pubs/pinkbook/dip.html. Updated May 15, 2015. Accessed June 9, 2015.
Immunization schedules. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/vaccines/schedules/index.html. Updated February 7, 2017. Accessed May 22, 2017.
Td (tetanus, diphtheria) VIS. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/vaccines/hcp/vis/vis-statements/td.html. Updated February 24, 2015. Accessed June 9, 2015.
Tdap (tetanus, diphtheria, pertussis). Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/vaccines/hcp/vis/vis-statements/tdap.html. Updated February 24, 2015. Accessed June 9, 2015.
Last reviewed May 2016 by David L. Horn, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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