Are hallucinations sign of alzheimers? 70 yr old aunt seeing zebras at night. psychologist is stumped. aunt refusing to go for testing.

Possibly: In Alzheimers, there is loss of brain tissue. Depending on where the tissue is lost, it can have different affects. However, this is not usual in Alzheimer's. Has your aunt had an evaluation by a specialist in brain diseases (neurologist)? This specialist is better equipped than a psychologist to make this diagnosis. Same is true for mini-strokes.