What condition is indicated by sudden abdominal pain and low-grade fever following the consumption of fatty foods?

Sudden abdominal pain accompanied by a low-grade fever after consuming fatty foods strongly suggests cholecystitis. Cholecystitis is the inflammation of the gallbladder, commonly triggered by the presence of gallstones, which can obstruct the cystic duct. After fatty meals, the gallbladder contracts to release bile for digestion. If a gallstone blocks this process, it can lead to pain in the upper right abdomen, often severe and can present with fever due to inflammation or infection.

The specific connection to fatty foods makes this condition particularly relevant, as the gallbladder is most active after the intake of fats. While appendicitis can cause abdominal pain and fever, it typically wouldn't be linked specifically to fatty food intake. Gastric hemorrhage often presents with different symptoms, such as hematemesis or melena, and peptic ulcers are typically characterized by burning pain rather than acute onset after eating. Thus, the overall clinical picture aligns most closely with cholecystitis.