Patients with neuroblastoma should be cautious with their diet and avoid foods that are overly greasy or spicy. It's also advisable to limit or avoid carbohydrate-rich or fried foods and those high in cholesterol. If the patient has allergies, they should avoid seafood products, which contain abundant animal proteins and can trigger allergic reactions, potentially leading to allergic dermatitis or allergic asthma. Additionally, some fruits, such as durian or mango, may also induce allergic reactions, so it is best to consume them sparingly or not at all.