Background: Ludwig’s angina is a rare but potentially life-threatening deep neck space infection characterised by rapidly progressive cellulitis involving the submandibular, sublingual, and submental spaces. Early recognition is essential due to the risk of acute airway compromise and systemic complications.

Case Presentation: A 45-year-old male presented with progressive submandibular swelling, dysphagia, voice changes, and respiratory distress. Clinical examination and ultrasonography revealed diffuse oedema of the left submandibular and submental spaces without evidence of abscess formation, consistent with Ludwig’s angina. The patient was managed conservatively with close airway monitoring, broad-spectrum intravenous antibiotics, corticosteroids, and supportive care. No surgical intervention was required, and the patient showed significant clinical improvement.