Final answer:
The symptoms described indicate a possible diagnosis of multiple sclerosis (MS), a chronic autoimmune disease that affects the central nervous system. Consultation with a neurologist is advised.
Step-by-step explanation:
The symptoms described in the question, such as gradual onset forgetfulness, intellectual deterioration, fast/slurred speech, impaired gait, normal atrophy on CT, increased WBCs, elevated protein, and increased gamma globulin on lumbar puncture, are indicative of a neurological condition called multiple sclerosis (MS).
Multiple sclerosis is a chronic autoimmune disease where the immune system mistakenly attacks the protective covering of nerve fibers in the central nervous system (CNS). This leads to disruption in communication between the brain, spinal cord, and the rest of the body, resulting in various neurological symptoms.
The 75-year-old WWII veteran needs to consult with a neurologist for a definitive diagnosis and appropriate management of their symptoms.