Memory loss and confusion are early signs of Alzheimer's or dementia according to this document. The document lists 10 early signs including memory loss that disrupts daily life, challenges in planning or problem solving, difficulty completing familiar tasks, confusion with time and place, trouble understanding visual images, problems with speaking and writing, misplacing things and losing ability to retrace steps, decreased or poor judgement, withdrawal from activities, and changes in mood. The document advises consulting a doctor if you or a loved one experiences these symptoms.