Hepatitis A and Hepatitis B: Causes, Symptoms and Treatment
Hepatitis A and Hepatitis B are caused by viral infection, and both are infections of the liver. Both conditions can cause inflammation, but their modes of transmission, severity and potential long-term health implications of each vary. With prompt diagnosis and adequate medical care, most of these harms can be avoided. We at the international clinic in Singapore, CHI Health will assess each case on its merits and suggest appropriate investigations and treatment accordingly.
Understanding Hepatitis A and Hepatitis B
While the two viruses both impact the liver, Hepatitis A and B are caused by different viruses and have different modes of transmission. Hepatitis A is generally a mild, transient illness that many people completely recover from. Hepatitis B, however, can be a chronic infection that can lead to cirrhosis of the liver and the development of liver carcinoma if untreated (Jefferies et al., 2018).
Hepatitis A, which can also be referred to as an illness. The hepatitis A virus that causes it is usually spread through contaminated food and water, or direct contact with an infected individual. Meanwhile, hepatitis B is a result of infection by a virus. Blood and other bodily fluids from an infected individual are the usual means of transmission.
Symptoms of Hepatitis A and Hepatitis B
For most people, the symptoms are mild, with others showing more obvious signs of an inflamed liver. Some people, especially in the early stages of the condition, have no symptoms.
Common symptoms include:
- Fatigue
- Fever
- Loss of appetite
- Nausea and vomiting
- Pain or discomfort in the stomach, especially on the right side.
- Dark urine
- Pale stools
- Yellowing of the eye and skin (jaundice)
Hepatitis A symptoms tend to occur between two and seven weeks after exposure. They tend to go away after a couple of months. Symptoms of hepatitis B may take several weeks to develop. Not all people show symptoms (Terrault et al., 2018).
Causes and Risk Factors
By understanding the mechanism of transmission, these infections can be prevented from being transmitted.
Condition | Main Cause | Common Routes of Transmission |
Hepatitis A | Hepatitis A virus | Contaminated food or water, or close personal contact |
Hepatitis B | Hepatitis B virus | Blood to blood, sexual contact, sharing needles, ̶ passing from mother to baby during birth |
Travel to areas of poor sanitation can lead to a higher risk of Hepatitis A. Hepatitis B is also more likely in those who are exposed to blood due to work, sharing of injection equipment and unprotected sexual contact with an infected person (Schweitzer et al., 2015).
How Hepatitis A and Hepatitis B Are Diagnosed
To diagnose Hepatitis A and B, you first consult a doctor who asks about your symptoms, history, travel history, vaccinations or any potential exposure.
Blood tests are often required to establish the diagnosis and identify the type of virus present. Blood tests may consist of liver function or viral marker tests to determine if the infection is current, recent or chronic (European Association for the Study of the Liver et al., 2017). Further imaging or assessment of the liver may be necessary based on clinical findings.
Treatment for Hepatitis A and Hepatitis B
Treatments will vary depending upon the specific infection, severity of symptoms and the general state of health of the liver.
Antiviral treatment is not specifically available for the majority of cases of Hepatitis A. The treatment is typically supportive with attention to hydration, rest, nutrition, and observation until full recovery occurs.
Treatment for Hepatitis B varies according to whether the infection is acute or chronic. The majority of people with an acute infection will clear the virus without antiviral agents. Others with a chronic infection require periodic assessments, antiviral drugs, or long-term follow-up to prevent or delay progression to liver fibrosis/damage. Treatment depends on clinical evaluation as well as blood tests, liver function, and the severity of inflammation on biopsy (Lok et al., 2016).
How we work at CHI Health
When needed, we offer a full personal history assessment, diagnostic testing, vaccination advice, and a tailored management plan to meet each individual patient’s health care requirements.
Prevention and Long-Term Management
Vaccination is one of the most widely used methods to prevent infections. Vaccines are licensed for use against both Hepatitis A and B and recommended for those who qualify based on age, travel destinations, work, medical conditions, and other risk factors.
Other preventative steps involve good hand hygiene, consuming safe food and water when travelling, not sharing needles or personal items that may have come into contact with blood, and practising safer sex. Those with chronic Hepatitis B should have regular medical reviews to check the health of their liver and to catch any changes early (Nelson et al., 2020).
When Should You Seek Medical Attention?
You should see your doctor if you develop jaundice, ongoing abdominal pains, nausea beyond a few hours, unexplained exhaustion or think that you may have been exposed to either virus. A diagnosis can also enable you to be monitored appropriately, seek treatment if relevant and help reduce transmission to other people. Knowing all about Hepatitis A and B will enable you to identify symptoms early and take action when needed.
At CHI Health, our international medical clinic in Orchard brings you comprehensive diagnostic testing, tailored treatment plans, and medical guidance for hepatitis management. Don’t delay if you suspect hepatitis exposure; book a consultation with our team today to get the right diagnosis and care. With correct immunisation, timely diagnosis, and personalised medical care, many people recover well or manage their condition while protecting their future liver health.