Answer: Gastroenteritis
Explanation:
The gastroenteritis is a condition in which the mucous lining of the stomach and intestine is inflamed or irritated. This occurs due to the bacterial or viral infection.
The gastroenteritis causes symptoms of watery diarrhea, vomiting, stomach pain, fever, headache, and nausea.
Due to diarrhea and vomiting person may feel dehydrated. The signs of dehydration can be seen on the skin, dry mouth, increase in thirst and feeling of light headed.