<unk>  is a form of severe, widespread cellulitis of the floor of the mouth, usually with bilateral involvement. Infection is usually primarily within the submandibular space, and the sublingual and submental spaces can also be involved. It presents with an acute onset and spreads very rapidly, therefor early diagnosis and immediate treatment planning is vital and lifesaving. The external signs may include bilateral lower facial swelling around the jaw and upper neck. Signs inside the mouth may include elevation of the floor of mouth due to sublingual space involvement and posterior displacement of the tongue, creating the potential for a compromised airway. Additional symptoms may include painful neck swelling, drooling, tooth pain, dysphagia, shortness of breath, fever, and general malaise. Stridor, trismus, and cyanosis may also be seen when an impending airway crisis is nearing.
Ludwig's angina
Streptococcal pharyngitis
Herpes esophagitis
Tropical ulcer
Lymphocytic esophagitis
Cytomegalovirus esophagitis
Eosinophilic esophagitis
Rhinitis medicamentosa