A 52-year-old male presents to the clinic with a painful swelling on the left side of his face, just below the ear. The pain has been worsening over the past 3 days, and he reports difficulty opening his mouth and chewing. The patient also mentions experiencing dry mouth and mild fever. On physical examination, there is tenderness and swelling in the region of the left parotid gland, with slight redness of the overlying skin. No pus is noted from the salivary ducts, but palpation suggests blockage. A history of reduced fluid intake and recent upper respiratory infection is noted. The patient is diagnosed with acute bacterial sialadenitis, likely secondary to ductal obstruction, and treatment with antibiotics and warm compresses is initiated.