Signs of parotitis include which of the following?

Parotitis, which is inflammation of the parotid gland, often presents with distinct clinical signs that are associated with the underlying pathology. Swelling is a hallmark of parotitis due to fluid accumulation and inflammation in the parotid gland, leading to visible enlargement. Additionally, the formation of salivary stones, known as sialolithiasis, can occur, obstructing saliva flow and contributing to the swelling and inflammation. Exudate, which may be purulent in cases of bacterial infection, can arise from the inflamed duct of the gland, indicating infection.

The presence of these three signs—swelling, stones, and exudate—provides a clear indication of parotitis, distinguishing it from other oral or systemic conditions that may present with similar symptoms.