Central Pain Syndrome in Survivors of Head and Neck Cancer

Inclusion Criteria: * Patients with histologically proven head and neck cancer * Patients without a diagnosis of head and neck cancer (up to 10 patients, see below) * We anticipate enrolling a total of 75 patients with a history of head and neck cancer who will complete all questionnaires and MRI scanning. We will also recruit up to 10 patients WITHOUT a diagnosis of head and neck cancer to facilitate optimization of the MRI scanning processes. This will allow us to address logistical issues, such as pressure stimulator setup and timing of each scan to be performed. * Completed multi-modality therapy a minimum of 6 weeks prior to study entry. * Willing and able to provide informed consent * All participants must be at least 21 years of age * Able to speak English Exclusion Criteria: * Patients who are pregnant * Patients who are unable to lie still * Patients who are unable tolerate pressure stimulator * Non-MRI compatible devices such as aneurysm clips, cardiac pacemakers or defibrillators, cochlear implants, hardware, or any other implants * Iron-based tattoos, pieces of metal (bullet, BB, shrapnel) close to or in an important organ (such as the eye), or other non-MRI compatible metal in the body