Types of Hepatitis C
Hepatitis C: Types list
The list of types of Hepatitis C mentioned in various sources includes:
Acute Hepatitis C
Acute hepatitis C is diagnosed on the basis of
symptoms such as jaundice, fatigue, and nausea, along with marked
increases in serum ALT (usually greater than 10-fold elevation), and
presence of anti-HCV or de novo development of anti-HCV.
Diagnosis of acute disease can be problematic because anti-HCV is not
always present when the patient presents to the physician with symptoms.
In 30 to 40 percent of patients, anti-HCV is not detected until 2 to 8
weeks after onset of symptoms. Acute hepatitis C can also be diagnosed by
testing for HCV RNA, but another approach is to repeat the anti-HCV
testing a month after onset of illness.
Chronic Hepatitis C
Chronic hepatitis C is diagnosed when
anti-HCV is present and serum aminotransferase levels remain elevated for
more than 6 months. Testing for HCV RNA (by PCR) confirms the diagnosis
and documents that viremia is present; almost all patients with chronic
infection will have the viral genome detectable in serum by PCR.
Diagnosis is problematic in patients who cannot produce anti-HCV
because they are immunosuppressed or immunoincompetent. Thus, HCV RNA
testing may be required for patients who have a solid-organ transplant,
are on dialysis, are taking corticosteroids, or have agammaglobulinemia.
Diagnosis is also difficult in patients with anti-HCV who have another
form of liver disease that might be responsible for the liver injury, such
as alcoholism, iron overload, or autoimmunity. In these situations, the
anti-HCV may represent a false-positive reaction, previous HCV infection,
or mild hepatitis C occurring on top of another liver condition. HCV RNA
testing in these situations helps confirm that hepatitis C is contributing
to the liver problem.
(Source: excerpt from Chronic Hepatitis C Current Disease Management: NIDDK)
Hepatitis C: Rare Types
Rare types of medical conditions and diseases in related medical categories:
Hepatitis C: Related Disease Topics
More general medical disease topics related to Hepatitis C include:
Research More About Hepatitis C