| A. Three or more of the following symptoms, present during the same two-week period, and representing a change from a previous level of functioning. Either item one or item two must be included: |
| 1. Clinically significant depressed mood |
| 2. Decreased positive affect or pleasure in response to social contacts and usual activities |
| 3. Social isolation or withdrawal |
| 4. Disturbed appetite |
| 5. Disturbed sleep |
| 6. Psychomotor retardation or agitation |
| 7. Irritability |
| 8. Fatigue or loss of energy |
| 9. Feelings of worthlessness, hopelessness, or inappropriate guilt |
| 10. Recurrent thoughts of death or suicidal ideation, plan, or any attempt |
| B. Meets criteria for Alzheimer-type dementia |
| C. Depressive symptoms cause clinically significant distress or disruption in function |
| D. Symptoms do not occur exclusively during an episode of delirium |
| E. Symptoms are not due to a direct physiologic effect from a substance (medication or drug of abuse) |
| F. Symptoms are not better accounted for by another condition |
| Specify if: |
| Co-occurring onset: onset antedates or co-occurs with AD symptoms |
| Post-AD onset: onset occurs after AD diagnosis |
| Specify if: |
| With psychosis of AD |
| With other significant behavioral signs or symptoms |
| With past history of mood disorder |
