As mentioned previously, hyperbilirubinemia can be caused by a liver condition, anaemia, or other conditions that affect bilirubin drainage or production. If you have high levels of cholesterol, you might be at a higher risk of having hyperbilirubinemia, as you can have an increased risk of developing gallstones, which can prevent bilirubin from draining efficiently.
Liver dysfunction or inflammation can also raise bilirubin levels. Such liver conditions can develop due to autoimmune diseases, liver cancer, hepatitis, and drinking excessive amounts of alcohol. Excessive intake of paracetamol can also be toxic to the liver and can lead to increased bilirubin.
Haemolytic anaemia can also cause high bilirubin, and this can be either due to genetics (such as sickle cell disease or thalassemia), an enlarged spleen, certain autoimmune diseases, typhoid fever, infectious hepatitis, or other infections.
Symptoms of hyperbilirubinemia are broad and may depend on the underlying cause behind these elevated levels. The most common symptom of hyperbilirubinemia is when your skin and the whites of your eyes start to turn yellow, which is known as jaundice. Other general symptoms include abdominal pain, chest pain, fever and body aches, chills, dark urine, nausea and vomiting, fatigue and drowsiness.
Symptoms depending on why your bilirubin levels were high in the first place can vary. For example, if you have gallstones, you might experience abdominal pain or chest pain, as well as a sharp pain towards your right shoulder, as well as nausea and vomiting. If you have liver dysfunction or hepatitis, you might experience other than jaundice, itchy skin, dark urine, oedemas around your ankles, as well as unusual colour of stool (usually black), nausea and vomiting. Bile duct inflammation usually shares similar symptoms, but you might also experience weight loss. Symptoms of haemolytic anaemia include fatigue, weakness, headaches, dizziness, as well as difficulties breathing.
If you are experiencing these symptoms, even without having jaundice, it is recommended to take a bilirubin test and seek medical advice from your doctor.
If you are experiencing blood in your stool or black stool, you are vomiting blood, or have a fever above 38°C, or you are experiencing severe abdominal pain or you develop a purple to red skin rash, you should immediately seek medical advice. (13,14)