Hepatitis (plural hepatitides) implies injury to
liver characterised by presence of
inflammatory cells in the liver
tissue.
Etymologically from
ancient Greek hepar (ηπαρ) or hepato- (ηπατο-) meaning 'liver' and suffix -itis denoting 'inflammation' (c.1727). The condition can be self limiting, healing on its own or can progress to scarring of liver. Acute hepatitis is when it lasts less than 6 months and chronic hepatitis is when it persists longer. A group of
viruses known as the hepatitis viruses cause most liver damages worldwide. Hepatitis can also be due to toxins (notably alcohol), other infections or from
autoimmune process. It may run a
subclinical course when the affected person may not feel
ill. The
patient becomes unwell and
symptomatic when the disease impairs liver functions that include among other things, screening of harmful substances, regulation of blood composition and production of bile to help digestion.
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