For over a week, barbara, sleeping very little but having lots of energy, has spent considerable money on shopping sprees for new clothes. she talks rapidly and constantly about how she will use her new wardrobe to become an immediate success as a model. barbara is demonstrating many of the symptoms of a episode, which is related to one of the disorders.

 Manic episode , Mood

Explanation:

Manic episode is defined as the emotional period of time where a person experiences alteration in mood, depression,risk taking attitude, elevation of emotions and thoughts and mood swings.

Mood disorder is defined as change or manipulation of mood that results in disturbance of daily life acts performed by a person.

According to the situation mentioned in question, Barbara is experiencing mood swings in the form of manic episode which is lined with mood disorder.She has not got enough sleep but still persist energy for shopping to fill her wardrobe for becoming model.She is spending significant amount on money on this act which is quite risky and unreasonable due to mood alteration.

answer; /// charles darwin;