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Hansen's Disease (Leprosy)




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What is Hansen’s disease?
Hansen’s disease, also known as leprosy, is a chronic bacterial disease that mainly affects the skin, nerves in the hands and feet, and lining of the nose. It is treatable and is not easy to spread.  

Who gets Hansen’s disease?
Most people cannot be infected by the bacteria that cause Hansen’s disease.  Those at greatest risk are the family of a person who has the disease, but is not being treated.

How common is Hansen’s disease?
Hansen’s disease is rare in the U.S., but about 250,000 new cases are diagnosed each year in the world.

How is Hansen’s disease spread?
Although the mode of transmission has not been proven, prolonged close (e.g., household) contact may contribute to risk.  The major source of the bacteria is probably nasal secretions from patients with untreated disease, probably spread through respiratory droplets.  The majority of cases have no known contact with another person with the disease. 

What are the symptoms of Hansen’s disease?
The symptoms of Hansen’s disease can be very different depending on what type of Hansen’s disease and what part of the body is affected. The first signs of Hansen’s disease are usually pale or slightly red areas or a rash on the skin.  Other symptoms can include numbness in the hands and feet, nodules on the body and a blocked/stuffy nose.

How soon after exposure do symptoms appear?
The incubation period ranges from 9 months-20 years.

How long can an infected person spread Hansen’s disease?
In most cases, a person will not infect others after a receiving a few days of treatment.

How is it diagnosed?
Hansen’s disease is diagnosed by examining a biopsy of the skin.

What is the treatment for Hansen’s disease?
Specific antibiotics can be prescribed by a doctor. Treatment usually involves more than one drug taken for a long time, i.e., months to years.

How can Hansen’s disease be prevented?
The best way to prevent the spread of Hansen’s disease is early diagnosis and treatment of people who are infected. Household and other close contacts should be seen by a doctor as soon as possible and then every year for five years after contact with a person who has the disease.

Where can I obtain additional information about Hansen's disease?
Additional information is available at: http://www.hrsa.gov/hansens/


Last Updated: 07-30-2011

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