Below are the best books we could find on Synesthesia.

Synesthesia is a neurological condition in which information meant to stimulate one sense instead stimulates several different senses at the same time. Hearing music might cause you to see a landscape of color, or seeing a particular number might evoke the taste a particular flavor. Some synesthesia actually mirrors physical sensations you observe in someone else in your own body. While synesthesia isn’t a disease or disorder, it can be disorienting when we experience the same stimuli differently or more intensely than those around us. Often, finding the language to describe what is happening and finding validation for our experiences can help us embrace our unique perspective of the world.