Agnosia
Step-by-step explanation:
Agnosia is a condition in which a person looses his ability to process or interpret sensory information. For this reason he is unable to recognize or identify things by the touch, smell, sound etc. Agnosia often occurs after a severe head injury or stroke.
In the given question the old male has damaged sensory cortex, due to which his brain is unable to process the sensory information from his skin and he is unable recognize or identify objects. This condition is a form of agnosia.