Why is the back of my throat grey?

Why is the back of my throat grey?

Just because the back of your throat is grey, it doesn’t necessarily mean you have diphtheria. Other conditions can cause grey patches on the back of your throat, including acute pharyngitis (sore throat) and tonsillitis. If you develop grey patches on the back of your throat, call and schedule an appointment with your healthcare provider. They can determine the cause and design a personalized treatment plan to meet your needs.