A Patient Comes to the Office for an Emergency Visit

Multiple Choice

A patient comes to the office for an emergency visit complaining of a toothache in the left posterior mandible. On clinical examination you notice a gray-to-white patch on the left posterior buccal mucosa. On questioning, the patient tells you that this area is also painful. After reviewing the patient's medical history, you question the patient regarding his recent use of

A) hydrogen peroxide.
B) aspirin.
C) antibiotics.
D) mouthwash.