What Is Acute Hepatitis and How Can It Affect Your Health?

What Is Acute Hepatitis and How Can It Affect Your Health

Acute hepatitis is an inflammation of the liver that can have various causes and present with a wide range of symptoms. Some people have only mild symptoms or no symptoms at all; others may develop a severe illness. In rare cases, acute liver failure may occur. Diagnosis depends on clinical evaluation and appropriate tests.

How Is the Liver Affected?

The liver performs many essential functions, including processing nutrients and medications, producing proteins and bile, and eliminating certain substances from the body. When liver inflammation occurs, symptoms and changes in lab test results may appear. In severe cases, liver function may be compromised.

Acute hepatitis can be caused by viruses, autoimmune conditions, toxins, or medications, among other causes. Early diagnosis allows for identifying the cause, assessing the severity, and guiding treatment and follow-up care.

Most Common Causes of Acute Hepatitis

The causes can be divided into infectious and non-infectious:

Infectious causes (Hepatitis Viruses)

• Hepatitis A – Transmitted primarily via the fecal-oral route, through contaminated water or food, or through close contact with an infected person. In most cases, recovery is complete, although severe illness can rarely occur.
• Hepatitis B – Can be transmitted through blood and other bodily fluids, including through sexual contact and from mother to baby during childbirth.
• Hepatitis C – Is transmitted primarily through contact with infected blood. Sexual transmission is less common but can occur in certain situations.
• Hepatitis E – It is transmitted primarily through the fecal-oral route; in some regions, it may also be associated with the consumption of undercooked meat or offal from infected animals.

Non-infectious causes

• Liver reactions or damage caused by medications or supplements, including, in certain circumstances, excessive doses of acetaminophen;
• Excessive alcohol consumption or exposure to other toxic substances;
• Autoimmune diseases;
• Metabolic disorders, such as Wilson’s disease, although these are less common causes of acute hepatitis.

Early symptoms and when to suspect

Acute hepatitis may be asymptomatic or present with nonspecific symptoms. When symptoms are present, they may include:

• Extreme fatigue
• Low-grade fever
• Abdominal pain (right side)
• Dark urine
• Light-colored stools
• Nausea and vomiting
• Yellowing of the skin or eyes (jaundice)

These signs warrant attention, especially when they occur together or following potential exposure to a risk factor. However, symptoms alone are not enough to confirm acute hepatitis.

Learn more about symptoms in this article on “Acute Hepatitis Symptoms: Recognize the Signs and Protect Yourself” and find out when to take action.

At-Risk Groups

• People who have traveled to regions where certain types of hepatitis are more common or where sanitation conditions are poor;
• Healthcare workers or others with occupational exposure to blood or bodily fluids;
• People with sexual behaviors that increase the risk of viral hepatitis, especially hepatitis B;
• People who have gotten tattoos or piercings with possible exposure to blood under unsafe conditions;
• People who share drug injection equipment or who have had other exposures to potentially infected blood.

How is the diagnosis made?

The diagnosis combines clinical evaluation and a history of possible exposures with laboratory tests. Transaminases (ALT and AST), bilirubin, and virus-specific markers may be important, but the tests selected depend on the suspected cause.

If you want to know in detail which tests are used to detect acute hepatitis and how they work, you can read more in the article “Acute Hepatitis Diagnosis: Get Tested with Confidence.”

Possible Complications

Although many cases resolve spontaneously—especially those caused by hepatitis A and E—there are real risks:

• Acute liver failure, a rare but potentially serious complication;
• The need for a liver transplant;
• Progression to chronic hepatitis (in cases of hepatitis B and C);
• The risk of liver cancer is primarily associated with chronic infection by certain viruses, particularly hepatitis B and hepatitis C, and not with acute hepatitis alone.

How can it be prevented?

Prevention is possible and involves:

General measures

• Food and personal hygiene, including proper handling of water and food;
• Washing your hands frequently;
• Avoiding the sharing of needles, razor blades, and sharp objects;
• Safer sexual practices, depending on the risk of transmission of the specific type of hepatitis.

Vaccination

There are effective vaccines against hepatitis A and B. Vaccination against hepatitis B is part of Portugal’s National Immunization Program. Vaccination against hepatitis A is recommended in specific situations, in accordance with national guidelines and individual risk.

Treatment of Acute Hepatitis

Treatment varies depending on the cause:

• Hepatitis A and E: In many cases, treatment is supportive, involving hydration, adequate nutrition, and clinical monitoring. Hepatitis E can be more severe in certain situations, such as during pregnancy.
• Hepatitis B: Most acute cases are managed with supportive care; in severe cases, specialized antiviral treatment may be necessary.
• Hepatitis C: Acute infection can be treated with direct-acting antivirals, as directed by a doctor.
• Toxic or drug-induced: The cause must be identified, and, when appropriate, the responsible substance should be discontinued, always under medical supervision, especially if it is a prescription medication.
• Autoimmune: May require treatment with corticosteroids or other immunosuppressants under medical supervision.

Clinical and laboratory follow-up is essential to assess progression and recovery.

Why is it important to act early?

Early identification allows for assessing the severity and guiding treatment. However, not all cases of acute hepatitis progress in the same way, and not all require the same type of intervention.

When and where should you get tested?

If acute hepatitis is suspected or there has been a risk exposure, it is best to seek a clinical evaluation to determine which tests are necessary and the appropriate time to perform them.

Frequently Asked Questions (FAQ)

1. Is acute hepatitis contagious?

It depends on the cause. Viral hepatitis is contagious, but the mode of transmission varies among different viruses. Hepatitis caused by medications, alcohol, or other non-infectious causes is not contagious.

2. Is there a cure for acute hepatitis?

Many cases of acute hepatitis, especially those caused by hepatitis A and E viruses, resolve completely on their own. Others may require specific treatment or long-term follow-up. The course of the disease depends on the cause and severity.

3. What are the initial symptoms?

Initial symptoms may be nonspecific, such as fatigue, nausea, loss of appetite, or fever. Dark urine and jaundice may occur, but they are not present in all cases.

4. Is there a vaccine for all types of hepatitis?

No. There are effective vaccines against hepatitis A and B. There is currently no widely available vaccine against hepatitis C and D; prevention of hepatitis E depends on the context, since vaccine availability is limited to certain countries.

5. Who should undergo routine liver tests?

The need for routine testing depends on age, medical history, risk factors, symptoms, and clinical indication. It is not necessary to perform a “liver panel” indiscriminately on everyone.

6. Is it possible to have acute hepatitis and not know it?

Yes. Many cases are asymptomatic or present with mild symptoms that go unnoticed.

Knowledge is Prevention

Hepatitis can be silent, but that doesn’t always mean it’s a serious illness. Prevention, proper diagnosis, and medical follow-up are essential for identifying who needs treatment and preventing complications.

If you have questions, symptoms, or simply want to get screened, visit the nearest Germano de Sousa collection point and get your tests done safely and with confidence.