Patients will be randomly assigned to 1 of 4 groups for a specific Osteopathic Manipulative Treatment (OMT): Compression of Fourth Ventricle (CV4) only, CV4 and subject appropriate OMT, subject appropriate OMT only (no CV4), and sham (touch only). There will be 8 subjects per OMT group, making it 24 subjects altogether assigned to one of the three OMT groups, and 24 sham subjects.