How can I know the cause of obstructive jaundice from history and physical examination

While a definitive diagnosis of the cause of obstructive jaundice usually requires further tests and imaging, there are certain aspects of the patient's medical history and physical examination that can provide clues to the cause. Here are some key points to consider:

1. Medical History:
- Previous medical conditions: A history of gallstones, primary biliary cholangitis, primary sclerosing cholangitis, or previous similar episodes can contribute to the diagnosis.
- Medications: Certain medications such as oral contraceptives, anabolic steroids, or chemotherapeutic agents can be associated with biliary obstruction.
- Alcohol consumption: Chronic excessive alcohol intake can lead to alcoholic liver disease, which may result in obstructive jaundice due to related complications.
- Recent surgeries or trauma: Obstructive jaundice can occur as a result of surgical intervention or trauma to the bile ducts.

2. Physical Examination:
- Abdominal examination: A physical exam may reveal enlarged liver (hepatomegaly), palpable gallbladder, or distended gallbladder (more common in acute cholecystitis). A firm, nodular, or irregular liver may suggest liver metastasis as a cause of obstruction.
- Tenderness: Right upper quadrant abdominal tenderness may point towards gallstone-related conditions like acute cholecystitis, choledocholithiasis, or cholangitis.
- Jaundice: Evaluation of the extent and distribution of jaundice can provide insights into the level and cause of obstruction.

It is important to note that additional investigations such as blood tests, imaging (such as ultrasound, CT scan, or MRI), and potentially invasive procedures are often required to confirm and identify the specific cause of obstructive jaundice. Consulting a healthcare professional is always recommended to obtain an accurate diagnosis and appropriate management plan.