A patient complains of numbness of lower lip. There is no history of tooth extraction. It could be______________?
Correct answer: B. Metastatic neoplasia
- A. Infection
- B. Metastatic neoplasia
- C. Dental Manipulation
- D. CNS disease
Explanation
Unexplained numbness of the lower lip or chin is the classic numb-chin syndrome and may indicate malignant involvement of the mental or inferior alveolar nerve, including metastatic cancer. Infection and dental manipulation are possible causes only when supported by a relevant history or local findings.
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