Face blindness, or prosopagnosia, is characterized by difficulty in recognizing and distinguishing faces, and is partly accompanied by memory impairment, object recognition disorders, and anxiety disorders. Face blindness is one of the cognitive disorders that is characterized by difficulty in recognizing and distinguishing faces. Symptoms of the disorder vary in severity, ranging from difficulty recognizing the faces of strangers, to difficulty recognizing the faces of family members, and even the inability to recognize one’s own face. However, patients can mostly recognize people by external factors such as clothing or hairstyle. Facial dysmorphic disorder may also be accompanied by memory impairment and object recognition impairment, which are associated with difficulty recognizing faces. As the disease has a greater impact on socialization, patients may show signs of social disorders and anxiety, such as fear of socializing, nervousness, and uneasiness in public places. Patients with these symptoms should seek medical attention as soon as possible to identify the cause of the disorder and then undergo appropriate treatment to alleviate the symptoms.