Final answer:
Herpetic gingivostomatitis is the inflammation of the mucous membranes of the oral cavity caused by the herpes simplex virus. It is characterized by ulcers inside the mouth and can be treated with mouthwashes or antiviral medications.
Step-by-step explanation:
The inflammation of the mucous membranes of the oral cavity caused mostly by the herpes simplex virus is known as herpetic gingivostomatitis. It is characterized by ulcers on the mucous membranes inside the mouth and can also lead to cold sores on the lips, mouth, or gums. The infection can be diagnosed through clinical examination and may be treated with mouthwashes or antiviral medications.