Final answer:
The initial symptoms of Crohn's disease include abdominal pain, diarrhea, fever, and weight loss.
Step-by-step explanation:
The initial symptoms that a nurse should expect in a client diagnosed with regional enteritis (Crohn's disease) include abdominal pain, diarrhea (with or without blood), fever, and weight loss. Malnutrition due to faulty absorption of nutrients may also occur. It is important for the nurse to closely monitor the client's symptoms and provide appropriate care to manage the disease and its potential complications.