Simple Forgetfulness or Alzheimer's Disease

Is it Alzheimer’s disease where nerve cells in the brain die gradually, or is it simple forgetfulness?
More symptoms here: Alzheimer’s disease symptoms may be hard to recognize at first. You may assume that symptoms such as mild forgetfulness or an occasional loss of focus are normal signs of aging. But as the disease progresses, Alzheimer’s disease symptoms become more than “normal” changes. They become frightening, incapacitating, and dangerous. In the latter stages of disease, people with Alzheimer’s often require round-the-clock care.  Early symptoms here.