Final answer:
Manic depression, also known as bipolar disorder, is characterized by extreme mood swings between manic episodes and depressive episodes. The main symptoms of manic depression include elevated mood or irritability, increased energy and activity levels, decreased need for sleep, racing thoughts, reckless behavior, and feeling overly confident or grandiose during manic episodes.
Step-by-step explanation:
Manic depression, also known as bipolar disorder, is characterized by extreme mood swings between manic episodes and depressive episodes. The main symptoms of manic depression include elevated mood or irritability, increased energy and activity levels, decreased need for sleep, racing thoughts, reckless behavior, and feeling overly confident or grandiose during manic episodes. However, it is important to consult with a healthcare professional to obtain an accurate diagnosis and appropriate treatment for the symptoms experienced by the 75-year-old patient.