The expected duration of your involvement in this research study will be up to 3 months from the time of enrollment. The intervention for this study will be 3 in person hypnosis sessions over 3 weeks plus a mobile web application for use of at least 2 times per week between the in-person hypnosis sessions. The mobile hypnosis application will be continued for 3 months after the in-person intervention. A follow up questionnaire will be administered at one month and two months after the first in-person hypnosis session. For those subjects randomized to the hypnosis group, a magnetic resonance imaging (MRI) study will be performed between the 1 month and 3 month follow up visits. The total duration of the study is 24 months. The total number of subjects in this study will be 30 patients with bladder pain syndrome.