Final answer:
An individual experiencing alternating periods of deep depression and mania is likely experiencing Bipolar Disorder, which is characterized by extreme mood swings and is a type of mood disorder that affects day-to-day activities and relationships.
Step-by-step explanation:
An individual who alternates between periods of deep depression and mania may have Bipolar Disorder. This mental health condition is characterized by extreme mood swings that include emotional highs (mania or hypomania) and lows (depression).
Bipolar disorder was previously known as manic depression due to these significant mood swings. These shifts in mood can affect sleep, energy, activity, judgment, behavior, and the ability to think clearly. Episodes of mood swings may occur rarely or multiple times a year; some may also experience emotional symptoms between episodes. These intense mood changes can significantly impact an individual's life, causing problems in day-to-day activities and relationships. Moreover, the mood swings associated with bipolar disorder are typically more severe than the normal ups and downs most people go through.
Treatment often involves a combination of medication and psychotherapy for management. According to statistics, mood disorders, including bipolar disorder and depression, are prevalent and lead to hospitalizations in the U.S. Recognizing the symptoms and seeking professional help is crucial for individuals experiencing such mood disturbances.