Barbara was a 51-year-old woman who was brought to the emergency room by her husband with the chief complaint i feel like killing myself. she had begun to lost interest in life about 4 months earlier. during that time, she reported feeling sad everyday for most of the day. she had lost 9 pounds without dieting because she did not feel like eating. she had trouble falling asleep almost every night. she had diminished energy, concentration, and ability to do her administrative job at a dog food processing plant. she was convinced that she had made a mistake that would lead to the deaths of thousands of dogs. a. what are barbaras presenting symptoms