Numb chin syndrome (NCS) is sensory neuropathy characterized by numbness in the chin and lower lip, involving distribution of the mental nerve. Causes of NCS may be of regional origin, a systemic disease, and malignancy. In this study, we report a cas...
Numb chin syndrome (NCS) is sensory neuropathy characterized by numbness in the chin and lower lip, involving distribution of the mental nerve. Causes of NCS may be of regional origin, a systemic disease, and malignancy. In this study, we report a case of NCS occurring as a first symptom of malignant metastasis in a 57-year-old female patient diagnosed with hyperparathyroidism.