Acute gastroenteritis is primarily characterized by symptoms such as abdominal pain, diarrhea or vomiting, abdominal distension, fever, chills, etc. For fluid administration in such cases, the treatment varies based on the specific cause. If it is gastroenteritis caused by a viral infection, antiviral medications and astringents are typically used to stop diarrhea, along with rehydration. If it is bacterial enteritis, the type of fluid administered should primarily be anti-inflammatory. Moreover, if the patient experiences severe vomiting and diarrhea, accompanied by significant weakness, dizziness, poor skin turgor, and scanty urine, these are signs of dehydration. In such cases, the doctor will determine the severity of dehydration—whether it is mild, moderate, or severe—based on the patient's weight loss and will adjust the volume of fluids and electrolytes replenished accordingly.