The three criteria of appendicitis are abdominal pain, elevated white blood cell count, and signs of inflammation on imaging.
Abdominal pain is typically the most common and distinguishing symptom of appendicitis. It is usually felt in the lower right side of the abdomen and can range in severity from mild to severe. It may come on suddenly or gradually worsen over time. Other associated symptoms may include nausea, vomiting, loss of appetite, and fever.
An elevated white blood cell count is a sign of infection and can be indicative of appendicitis. Other laboratory tests, such as a complete blood count and urinalysis, may also be ordered to help rule out other causes of abdominal pain.
Imaging studies can also be used to detect signs of inflammation in the appendix. An ultrasound can be used to detect fluid in the area, while a CT scan or MRI can be used to visualize any changes in the structure and size of the appendix.
In addition to the three criteria of appendicitis, other factors such as age, gender, and medical history may also be taken into consideration when making a diagnosis. If appendicitis is suspected, it is important to seek medical attention as soon as possible to ensure prompt treatment and prevent complications.