Depression is a mood disorder where an individual feels sad, often without any traceable cause.

Symptoms of depression include:

  • Fatigue, chronic tiredness, lethargy
  • Changes in weight (gain or loss)
  • Loss of interest in acts of pleasure, hobbies or socialization
  • Focus and concentration problems
  • Guilt feelings
  • Suicidal ideation

There are several medical conditions associated with depression. The more common ones include:

  • Thyroid dysfunction (both under and overactive)
  • Anemia
  • Hypoglycemia
  • Structural brain disorders
  • Stroke
  • Brain tumor
  • Multiple sclerosis
  • Degeneration of brain tissue
  • Alzheimer’s disease
  • Parkinson’s disease
  • Dementia with Huntington’s disease
  • Senility
  • Cardiac conditions
  • Seizure disorders, like epilepsy
  • Cancer

Depression can be a side effect of some drugs or medications. If a patient starts showing signs of depression, his or her prescriptions should be examined as a possible cause.