What condition is described by difficulty naming people upon sight?

The condition that refers specifically to difficulty naming people upon sight is prosopagnosia. This neurological disorder, often referred to as "face blindness," is characterized by the inability to recognize faces, even those of familiar individuals. While individuals with prosopagnosia can see faces and perceive their features, they struggle to identify or name people based on their facial appearance. This condition highlights a specific impairment in the ability to process and recognize faces, which can result from brain injury, developmental issues, or certain neurological diseases.

Visual agnosia, in contrast, involves difficulty with object recognition but does not specifically pertain to faces. Apraxia pertains to issues with motor planning and executing movements, rather than recognition. Agnosia is a broader term that encompasses various forms of recognition impairment, but prosopagnosia specifically addresses the challenges associated with facial recognition. Thus, the correct identification of prosopagnosia clearly distinguishes it from these related but different conditions.