Answer:
bipolar disorder.
Step-by-step explanation:
In psychology, bipolar disorder is also referred to as 'manic depression' and 'manic-depressive illness'. It is described as one of the several mental disorders that often lead to unusual and unnecessary shifts of concentration, mood, activity levels, energy, and the capability of a person to carry out everyday tasks.
Symptom: Mania, mood swing, etc.
Treatment: Psychotherapy.
As per the question above, the statement represents the 'bipolar disorder'.