Symptoms of the disease include those similar to Alzheimer's, although the progression of the disease is more abrupt and fluctuates. Memory loss may include both short and long term simultaneously, while Alzheimer's impairment usually progresses from short to long term memory loss. Mood is an emotion with a long duration that may tend toward either depression or happiness. Bipolar disorders have one or more manic episodes usually followed or preceded by depressive periods. It should be recognized that although mood disorders are not the same as dementias, the symptoms can be similar.
Mood swings can impair cognitive abilities.
The person sleeps less and feels less need for rest. Speech may be loud, continuous, and full of joking. The patient may not recognize the domineering and demanding nature of the disorder. It is important to understand that the patient is not attacking an employee or friend, but acting out in general. Major depressive episodes consist of a loss of interest or pleasure in almost all activities for a minimum of two weeks.