3. An elderly female comes to your clinic with symptoms of insomnia nearly every day, fatigue, weight loss of over 5% of body weight over the past month, loss of interest in most activities, and diminished ability to concentrate. Although further testing may be necessary, based on this history the most likely diagnosis is a. Alzheimer’s dementia b. Anemia c. Collagen-vascular disease with CNS involvement d. Depression e. Hypothyroidism f. Parkinson’s disease. How you arrived at a diagnosis