Which of the following is NOT a common symptom of a throat infection?

Visual disturbances are not a common symptom of a throat infection. Typically, throat infections, such as pharyngitis or tonsillitis, present with symptoms localized to the throat. Redness, exudate, and swelling are all characteristic findings observable upon examination of the throat.

Redness refers to the inflammation of the throat tissues, often seen during an infection. Exudate is the presence of pus or a thick fluid that may coat the tonsils or the back of the throat, indicating a more severe infection. Swelling may occur in the tonsils or lymph nodes in response to infection as the body's immune system reacts to the pathogens. Visual disturbances, on the other hand, are usually associated with other conditions, such as neurological issues or eye problems, rather than infections localized to the throat. Therefore, recognizing the distinct symptoms associated with throat infections helps in clinical assessment and diagnosis.