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Cirrhosis is a condition in which the liver does not function properly due to long-term damage. Typically, the disease comes on slowly over months or years. Early on, there are often no symptoms. As the disease worsens, a person may become tired, weak, itchy, have swelling in the lower legs, develop yellow skin, bruise easily, have fluid build up in the abdomen, or develop spider-like blood vessels on the skin. The fluid build-up in the abdomen may become spontaneously infected. Other complications include hepatic encephalopathy, bleeding from dilated veins in the esophagus or dilated stomach veins, and liver cancer. Hepatic encephalopathy results in confusion and possibly unconsciousness.〔(【引用サイトリンク】url=http://www.niddk.nih.gov/health-information/health-topics/liver-disease/cirrhosis/Pages/facts.aspx )〕 Cirrhosis is most commonly caused by alcohol, hepatitis B, hepatitis C, and non-alcoholic fatty liver disease.〔〔 Typically, more than two or three drinks per day over a number of years is required for alcoholic cirrhosis to occur. Non-alcoholic fatty liver disease is due to a number of reasons, including being overweight, diabetes, high blood fats, and high blood pressure. A number of less common causes include autoimmune hepatitis, primary biliary cirrhosis, hemochromatosis, certain medications, and gallstones. Cirrhosis is characterized by the replacement of normal liver tissue by scar tissue. These changes lead to loss of liver function. Diagnosis is based on blood testing, medical imaging, and liver biopsy.〔 Some causes of cirrhosis, such as hepatitis B, can be prevented by vaccination. Treatment partly depends on the underlying cause. The goal is often to prevent worsening and complications. Avoiding alcohol is recommended. Hepatitis B and C may be treatable with antiviral medications. Autoimmune hepatitis may be treated with steroid medications. Ursodiol may be useful if the disease is due to blockage of the bile ducts. Other medications may be useful for complications such as swelling, hepatic encephalopathy, and dilated esophageal veins. In severe cirrhosis, a liver transplant may be an option.〔 Cirrhosis resulted in 1.2 million deaths in 2013, up from 0.8 million deaths in 1990.〔 Of these, alcohol caused 384,000, hepatitis C caused 358,000, and hepatitis B caused 317,000. In the United States, more men die of cirrhosis than women.〔 The first known description of the condition is by Hippocrates in the 5th century BCE. The word cirrhosis is from ; neologism from kirrhos "yellowish" and the suffix -osis (-) meaning "condition".〔.〕 ==Signs and symptoms== Cirrhosis has many possible manifestations. These signs and symptoms may be either as a direct result of the failure of liver cells or secondary to the resultant portal hypertension. There are also some manifestations whose causes are nonspecific, but may occur in cirrhosis. Likewise, the absence of any does not rule;out the possibility of cirrhosis.〔 Cirrhosis of the liver is slow and gradual in its development. It is usually well advanced before its symptoms are noticeable enough to cause alarm. Weakness and loss of weight may be early symptoms. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cirrhosis」の詳細全文を読む スポンサード リンク
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