Subtle minor physical features, such as a highly arched palate, wide or narrow set eyes, cuspidal ears (ears with angled ridges instead of a round curve at the top of the opening into the ear canal) or attached ear lobes, or cross-eyes have been described, but none of these findings alone allow a doctor to make the diagnosis. Additional physiological changes that are sometimes associated with schizophrenia include altered levels of chemicals in the body, insensitivity to pain, and abnormal ability to control body temperature.