Non-Alcoholic Fatty Liver Disease (NAFLD): This is the most common cause of fatty liver in individuals without a travel history. NAFLD is closely associated with obesity, insulin resistance, and metabolic syndrome, which are common in the general population.

Alcoholic Liver Disease: Although the question does not specify alcohol use, it is a common cause of fatty liver and should be considered, especially if the patient has a history of alcohol consumption.
Metabolic Syndrome: Conditions like diabetes, hypertension, and hyperlipidemia can contribute to the development of fatty liver, making metabolic syndrome a likely consideration.
Medication-Induced Fatty Liver: Certain medications, such as corticosteroids, tamoxifen, and some antidepressants, can cause fatty liver, so a thorough medication history is important.

Wilson's Disease: A genetic disorder that leads to copper accumulation in the liver, which can cause fatty liver among other symptoms. It's rare but potentially fatal if not treated.
Hemochromatosis: A genetic disorder causing iron overload, which can lead to liver damage and fatty liver. Early diagnosis is crucial to prevent long-term complications.
Alpha-1 Antitrypsin Deficiency: A genetic disorder that can cause liver disease, including fatty liver, and lung disease. It's essential to diagnose early to manage the condition effectively.

Glycogen Storage Diseases: Rare genetic disorders that affect glycogen metabolism, potentially leading to fatty liver.
Lipodystrophy: A group of rare disorders characterized by abnormal fat distribution, which can include fatty liver.
Abetalipoproteinemia: A rare genetic disorder affecting fat absorption and leading to fatty liver due to the accumulation of lipids in the liver.