A 77yo male presents with hx of enuresis and change in behavior. Exam: waddling gait. What is
the most likely dx?
a. Subdural hemorrhage
b. Brain tumor
c. Normal pressure hydrocephalus
d. Psychotic depression
Ans. The key is C. Normal pressure hydrocephalus. [age (usually occurs in 60s or 70s), loss of bladder
control (enuresis), waddling gait and behavior change are all features of normal pressure
hydrocephalus].