Social Security Administration. The Social Security Administration assigns social security numbers; administers the retirement, survivors, and disability insurance programs known as Social Security; and administers the Supplemental Security Income program for the aged, blind, and disabled. SSA.
Prosopagnosia is a neurological disorder characterized by the inability to recognize faces. Prosopagnosia is also known as face blindness or facial agnosia.
Also possible are physical disorders of the face that limit the ability of the face to show emotion. For example, the partial facial paralysis from Bell's palsy may reduce a person's ability to smile....more Â». Â» Review Causes of Lack of facial expression: Causes | Symptom Checker Â» | Assessment Questionnaire Â».