Public condition directory
Browse public condition summaries from China medical resources by stable specialty category.
Bacterial dysentery
Bacillary dysentery is an intestinal infectious disease caused by Shigella (dysentery bacillus). It is common in children, adolescents, and young adults, with a higher incidence in summer and autumn. The main symptoms include abdominal pain and diarrhea, accompanied by chills, fever, headache, fatigue, and vomiting.
View detailsViral hepatitis
Viral hepatitis is a group of infectious diseases primarily causing liver damage, caused by hepatitis viruses. According to etiology, it can be divided into five types: hepatitis A (HAV), hepatitis B (HBV), hepatitis C (HCV), hepatitis D (HDV), and hepatitis E (HEV). Prevalence of each type of hepatitis: Hepatitis A has the highest incidence in preschool children, followed by young adults. The positive rate for anti-hepatitis A virus is high after 20 years of age. The incidence of hepatitis B is 5% to 6%, with males more affected than females. The global infection rate of hepatitis C is approximately 2.8%. In China, the positive rate for hepatitis C virus in the general population aged 1-59 is 0.43%, with an estimated 10 million cases. Hepatitis D is dependent on hepatitis B. Among individuals positive for hepatitis B surface antigen (HBsAg), the hepatitis D virus infection rate ranges from 0% to 32%. Hepatitis E is more common in middle-aged and elderly individuals.
View detailsHBeAg positive chronic hepatitis B
"Big Three Positive" is a colloquial term referring to a condition in chronic hepatitis B patients where three markers in the hepatitis B virus "two pairs and a half" test are simultaneously positive: hepatitis B surface antigen (HBsAg), hepatitis B e-antigen (HBeAg), and hepatitis B core antibody (HBcAb). "Big Three Positive" indicates that the hepatitis B virus is actively replicating in the chronic hepatitis B patient and is highly infectious. However, "Big Three Positive" does not necessarily mean that liver function has been damaged.
Tuberculous peritonitis
Tuberculous peritonitis is a chronic, diffuse peritoneal infection caused by Mycobacterium tuberculosis. Based on pathological anatomical characteristics, it can be classified into three types: exudative, adhesive, and caseous, with the former two being more common. During the progression of the disease, a mixed type with 2-3 coexisting types may occur. Tuberculous peritonitis is more common in young and middle-aged individuals, with a slightly higher incidence in females than males. The main symptoms include fatigue, fever, abdominal distension, and abdominal pain.
View detailsSmall e-antigen negative
"Small three positives," or hepatitis B "small three positives," refers to a state where serological tests for hepatitis B virus "two pairs and a half" show positive results for hepatitis B surface antigen (HBsAg), hepatitis B e-antibody (anti-HBe), and hepatitis B core antibody (anti-HBc). Clinically, "small three positives" generally indicate two possibilities: one suggests that hepatitis B virus replication is suppressed, which is a sign of good prognosis; the other possibility is that the hepatitis B virus has mutated, remaining infectious and potentially causing liver function damage.
View detailsAIDS
Acquired Immunodeficiency Syndrome (AIDS) is a systemic disease caused by infection with the Human Immunodeficiency Virus (HIV). HIV attacks the human immune system, and infected individuals gradually lose their ability to fight off diseases, eventually dying from severe infections and malignant tumors in the late stages.
View detailsFever
Fever, also known as pyrexia, refers to a body temperature exceeding the normal range due to various causes. Generally, fever is diagnosed when the axillary, oral, or rectal temperature exceeds 37°C, 37.3°C, and 37.6°C, respectively, with a temperature fluctuation of more than 1°C within 24 hours. Fever can be classified by temperature (oral temperature): Low-grade fever: 37.3 – 38°C Moderate fever: 38.1 – 39°C High fever: 39 – 41°C Hyperpyrexia: Above 41°C It is important to note that the subjective discomfort experienced by the individual during a fever is often more significant than the exact temperature reading. Fever is commonly associated with various systemic and localized infections, and can also occur in some non-infectious diseases, such as tumors and connective tissue diseases.
View detailsHepatitis C
Hepatitis C, also known as viral hepatitis C, is an infectious disease caused by the hepatitis C virus (HCV). It primarily affects the liver, but other organs can also be involved. It is generally divided into acute and chronic phases, with the 6-month mark after viral infection serving as the dividing line. The onset of this disease is insidious, often without specific clinical symptoms. It commonly presents as fatigue, loss of appetite, and aversion to oily foods, with a small number of cases experiencing jaundice.
View detailsHepatitis
Hepatitis is a general term for liver inflammation caused by various factors, among which viral hepatitis caused by viral infection is more common. Common manifestations of hepatitis include nausea, fatigue, and loss of appetite.
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