Numb chin syndrome (NCS) is characterized by numbness in an area of the chin and lower lip along the distribution of the mental or inferior alveolar nerves. a branch of the mandibular division of the trigeminal nerve. Most cases of NCS are due to diffuse metastatic disease. especially associated with underlying lymphoproliferative and breast cancer. https://parisnaturalfoodes.shop/product-category/quercetin-complex/