Dear Al:
Yes, in some cases there is a common etiology. For instance, diabetes can cause a peripheral neuropathy and also predispose a patient to having TIA (athrosclerosis). Alcoholism can cause a peripheral neuropathy and also predispose to TIA via malnutrition. One needs to know what the underlying problem is before you can link up a peripheral neuropathy and stroke. Breast cancer can lead to metastic lesion in the brain and the chemotherapy can cause a peripheral neuropathy. I would pursue the latter. Ask your neurologist.
Sincerely,
CCF neuro MD