Skip to content

Information and Resources

Font Size
A
A
A

Definition of Histoplasmosis

Histoplasmosis: A disease caused by the fungus Histoplasma capsulatum. Most people with histoplasmosis have no symptoms. However, histoplasma can cause acute or chronic lung disease and progressive disseminated histoplasmosis affecting a number of organs. It can be fatal if untreated.

Positive skin tests to Histoplasma occur in as many as 80% of the people living in areas where the fungus is common, such as the eastern and central United States. Infants, young children, and older persons, in particular those with chronic lung disease, are at increased risk for severe disease. Disseminated disease is more frequently seen in people with cancer or AIDS or those on drugs that suppress the immune system, such as Remicade or steroids.

Recommended Related to FDA Center

Pet Turtles: Cute But Contaminated With Salmonella

The little glassy-eyed creatures may look cute and harmless, but small turtles can make people very ill. Turtles commonly carry bacteria called Salmonella on their outer skin and shell surfaces. People can get Salmonella by coming in contact with turtles or their habitats. Salmonella can cause a serious or even life-threatening infection in people, even though the bacteria do not make turtles sick. An example is the 2007 death of a four-week-old baby in Florida linked to Salmonella from a small...

Read the Pet Turtles: Cute But Contaminated With Salmonella article > >

The fungus grows in soil and material contaminated with bat or bird droppings. Spores become airborne when contaminated soil is disturbed. Breathing the spores causes infection. The disease is not transmitted from an infected person to someone else.

Symptoms start within three to 17 days after exposure; the average is 10 days. The acute respiratory disease is characterized by respiratory symptoms, a general ill feeling, fever, chest pains, and a dry or nonproductive cough. Distinct patterns may be seen on a chest X-ray. Chronic lung disease resembles tuberculosis and can worsen over months or years. The disseminated form is fatal, unless treated.

Mild cases resolve without treatment. Severe cases of acute histoplasmosis and all cases of chronic and disseminated disease are treated with antifungal medications, sometimes for life in those with compromised immune systems.

WebMD Medical Reference

Reviewed by Melinda Ratini, DO, MS on October 29, 2013

Hot Topics

WebMD Video: Now Playing

Click here to wach video: Dirty Truth About Hand Washing

Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

Click here to watch video: Dirty Truth About Hand Washing

Popular Slideshows & Tools on WebMD

man rubbing painful knee
Causes, warning signs.
feet
Solutions for 19 types.
acupuncture needle on shoulder
Live and thrive.
couple kissing
What do you know about locking lips?
lone star tick
How to identify that bite.
woman standing behind curtains
How it affects you.
brain scan with soda
Tips to avoid complications.
disciplining a boy
Types, symptoms, causes.
man with problem
Symptoms, causes, treatments.
woman dreaming
What Do Your Dreams Say About You?
two male hands
Understanding RA.

Pollen counts, treatment tips, and more.

It's nothing to sneeze at.

Loading ...

Sending your email...

This feature is temporarily unavailable. Please try again later.

Thanks!

Now check your email account on your mobile phone to download your new app.

Women's Health Newsletter

Find out what women really need.