Hello. A person may never know they have liver flukes. Some doctors may not diagnose the condition because the symptoms of fascioliasis are similar to many other conditions. Unlike some other parasites and diseases, a person cannot pass liver flukes accidentally to someone else. Individuals who do develop symptoms may experience some or all of the following: 1. Abdominal pain Once in a person s body, liver flukes make their way from the intestines to the liver. For them to get into the liver, the liver flukes must burrow through the lining of the liver, which causes pain in the upper right abdomen. Years after being infected, a person may experience periods where the bile ducts get blocked, which also causes abdominal pain. 2. Nausea, diarrhea, and vomiting A person may experience vomiting, diarrhea, and nausea during the early stages of infection or while the bile ducts are blocked. These symptoms can last several weeks to several months, depending on the severity of the infection. 3. Weight loss In addition to nausea, a person may have a lack of appetite. A loss of appetite can cause weight loss if it persists over time. 4. Hives The immune system often reacts to the liver flukes, causing hives to appear on the body. This symptom is most common during the early stages of the infection as the liver flukes burrow into the liver. 5. Fever Fever is most common during the earlier stages of the infection and when the bile ducts are blocked. 6. Malaise Malaise is a term used to describe a general or overall sense of not feeling well. As with some of the other symptoms, malaise is most common during the early stages and during times when the bile ducts are blocked. Between episodes, this feeling of malaise typically goes away. with regards- Dr Sanjay Kini