The primary symptoms of cholecystitis include sudden, severe pain in the upper right abdomen, which typically radiates to the right shoulder, scapula, and back. The pain often occurs more frequently at night and can be exacerbated by consuming a large amount of fatty foods, which may lead to acute cholecystitis. In terms of treatment, if severe abdominal pain occurs, timely pain relief is necessary. Spasmolytic painkillers and analgesics, such as opioids, can be used for pain relief. Additionally, treatment should address the underlying cause, including the use of antibiotics. Aminoglycoside antibiotics or cephalosporin antibiotics can be effective in treating the infection, and controlling the infection will also help alleviate the pain.