Geriatric Depression
Each individual will experience a different set of symptoms, these can include.  
  • Sadness
  • Fatigue
  • Abandoning or losing interest in hobbies or other pleasureable pastimes
  • Social withdrawal and isolation
  • Weight loss or loss of appetite
  • Sleep disturbances whether difficulty falling asleep or staying asleep, oversleeping or daytime sleeping
  • Loss of self-worth: worrying about being a burden, feelings of worthlesseness, self-loathing
  • Increased use of alcohol and/or other drugs
  • Difficulty concentrating
  • Excessive worrying
  • Neglecting personal appearance
  • Pacing and/or fidgeting
  • Pain, stomach problems or other physical symptoms
There are also things that can mimic, tigger or exacerbate depression.  One thing is a long list of medication that can cause or worsen depression: blood pressure, beta-blockers, sleeping pills, tranquilizers, calcium-channel blockers, medicine for Parkinson's disease, ulcer medication, heart drugs cotaining reserpine, steroids, high-chosterol drugs, painkillers and arthritis drugs, estrogens.  Other things include: alcoholism, personal loss and death of loved ones.  Chronic conditions such as stroke, Parkinson's Disease, diabetes, cancer, cardiovascular disease, and pain.  Depression could be mistaken for grief or dememtia.