A method (700) for localizing inflammation within a user's mouth using an oral care device (10), comprising the steps of: (i) emitting (720) light by one or more light emitters (42) of the oral care device； (ii) detecting (730), by a light detector (40) of the oral care device, reflectance from a surface at each of a plurality of locations within the user's mouth to generate reflectance data for each of the plurality of locations； (iii) determining (750), by the controller, for the plurality of locations, whether gingiva at that location is inflamed； and (iv) providing (760), via a user interface (46) of the oral care device, information to the user regarding the inflamed location or locations.
