Faith Healing
Faith healing is defined as the use of religious or spiritual intervention in order to cure disease.
People who claim this method of healing works attribute its efficacy to the use of various methods, some of which include, prayers, mental insights and certain spiritual practices. Such faith healing beliefs transcend sectarian and religious boundaries.
You find advocates in Christianity and among other religions as well, who believe that prayer and some other religious rites play some part in the cures and healing process.