Phenotype is the physical or functional expression in a given genome or genotype , which refers to the manifestation of the expression in the body of an individual of their genes.
A person with a diagnosis of probable Alzheimer’s disease refers to the existence of another condition , such as cerebral vascular disease or other chronic metabolic diseases earlier . These conditions can cause brain damage by themselves, but not the key symptoms of Alzheimer’s disease , which are in the foreground and they are evolutionary.
The doctor makes a diagnosis of probable Alzheimer ‘s disease after excluding other possible causes of cognitive impairment. Unlike the diagnosis of Alzheimer possible , in this case there is no other pathology related to the progressive deterioration in the patient.