Ludwig's angina is best described as which of the following?

• A. A viral upper respiratory infection
• B. A supraglottic swelling
• C. A parotid gland infection
• D. A rapidly progressive submandibular cellulitis often originating from dental infections

Answer: (D)

Ludwig's angina is a rapidly progressive bacterial cellulitis of the submandibular space, typically originating from a dental infection. This causes bilateral swelling under the jaw and floor of the mouth, which can push the tongue upward and threaten the airway. That combination of a dental-origin infection with diffuse submandibular space involvement and potential airway compromise is what sets it apart from the other options.

It is not a viral upper respiratory infection, which would lack the focal submandibular space involvement and airway-threatening swelling. It is not a supraglottic swelling condition like epiglottitis, which centers on the laryngeal supraglottic structures and presents with drooling and acute airway symptoms but without the characteristic submandibular cellulitis. It also isn’t a parotid gland infection, which would present primarily as parotid region swelling rather than the floor-of-mouth/submandibular space involvement.

Key point: rapid submandibular space infection from dental sources, with potential airway obstruction, requiring prompt airway assessment, broad-spectrum antibiotics covering oral flora including anaerobes, and surgical drainage if an abscess forms.