This case presentation summarizes a 63-year-old male patient who presented with left trigeminal neuralgia involving the mandibular division of the trigeminal nerve for the past 4-5 years. The patient experienced sudden, sharp stabbing pains 10-12 times per day initially that were triggered by activities like washing his face and shaving. While medication had reduced the pain episodes to 3-4 times daily, he recently developed constant pain in the same region aggravated by chewing. Examination and investigations ruled out any odontogenic cause, and treatment focused on continued pharmacotherapy and management of other dental issues like chronic periodontitis.