"R44.8" . "Synesthesia (also spelled syn\u00E6sthesia or synaesthesia; from the Ancient Greek \u03C3\u03CD\u03BD syn, \"together\", and \u03B1\u1F34\u03C3\u03B8\u03B7\u03C3\u03B9\u03C2 aisth\u0113sis, \"sensation\") is a neurological phenomenon in which stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway."@en . . .