Inclusion Criteria - Migraine (N=20):
- Female only.
- Ages 20-45 years.
- Presence of WMH on MRI.
Exclusion Criteria:
- History of SVI and/or history of MS or other neurological disease other than migraine.
- History of cancer or organ transplantation.
- Contraindication to MRI.
- Pregnancy.
- History of abnormal brain MRI other than WMH.
- Subjects not willing to comply with the study procedures will be removed from the study.
Inclusion Criteria - SVI disease (n=10):
- Female only
- Ages > 60 years.
- Presence of WMH on MRI.
Exclusion Criteria:
- History of migraine and/or history of MS or other neurological disease other than SVI.
- History of cancer or organ transplantation.
- History of abnormal brain MRI other than WMH.
- Pregnancy.
- History of abnormal brain MRI other than WMH.
- Subjects not willing to comply with the study procedures will be removed from the study.
Inclusion Criteria - MS (n=10):
- Female only.
- Ages 20-45.
- Presence of WMH on MRI.
Exclusion Criteria:
- History of migraine and/or history of SVI or other neurological disease other than MS.
- History of cancer or organ transplantation.
- History of abnormal brain MRI other than WMH.
- Pregnancy.
- History of abnormal brain MRI other than WMH.
- Subjects not willing to comply with the study procedures will be removed from the study.