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Lower Lip Numbness: Potential Causes from Nerve Damage to Dental Issues
Differential Diagnosis
- Nerve Injury: Trauma, surgery, compression, demyelinating disease (e.g., multiple sclerosis).
- Vascular Insufficiency: Atherosclerosis, Raynaud's phenomenon, cardiac dysfunction.
- Vitamin B12 Deficiency: Peripheral neuropathy, paresthesias.
- Medication Side Effects: Chemotherapy, antidepressants, anticonvulsants.
- Dental Pathology: Apical infection, inferior alveolar nerve involvement from mandibular procedures.
Action
Prompt clinical evaluation (neurological exam, labs, imaging if indicated) is necessary to identify the etiology and initiate targeted therapy.
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