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Sarcoidosis: People
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Sarcoidosis was once thought to be an uncommon condition. It's now known to affect tens of thousands of people throughout the United States. Because many people who have sarcoidosis have no symptoms, it's hard to know how many people have the condition.
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Sarcoidosis occurs more often in Caucasians of European descent and in African-Americans. About 10 to 40 out of every 100,000 people develop sarcoidosis. It is most common in young people between the ages of 20 and 40. Sarcoidosis is not contagious.
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Sarcoidosis rarely develops before the age of 10 or after the age of 60. However, the illness--with or without symptoms--has been reported in younger as well as in older people. When symptoms do appear in these age groups, the symptoms are those that are more general in nature, for example, tiredness, sluggishness, coughing and a general feeling of ill health.
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Sarcoidosis is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Sarcoidosis, or a subtype of Sarcoidosis, affects less than 200,000 people in the US population.
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Sarcoidosis affects the liver at some point in approximately 20% of people who have the disease. The liver can become enlarged. Some people have abnormal liver tests and/or a liver problem called cirrhosis, although this is rare.
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Sarcoidosis affects people of all ages although it primarily targets young adults between the ages of 20 and 40 years. Sarcoidosis is most common in Northern Europeans and American blacks. The lifetime risk of developing sarcoidosis is highest among American blacks, affecting 2.4 percent of this population; Swedish women, affecting 1.6 percent; and Swedish men, affecting 1.15 percent.
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