Bernard has been diagnosed with a mood disorder. He describes his symptoms as having racing thoughts, feeling highly energetic, being constantly irritable, and having a sense of euphoria that last for at least 4 days.

What disorder does Bernard most likely have?

Bipolar Disorder

Explanation:

A disorder associated with episodes of mood swings ranging from depressive lows to manic highs. Manic episodes may include symptoms such as high energy, reduced need for sleep, and loss of touch with reality. Depressive episodes may include symptoms such as low energy, low motivation, and loss of interest in daily activities. Mood episodes last days to months at a time and may also be associated with suicidal thoughts.

The answer is manic syndrome.

Explanation:

Also known as mania, this disorder is characterised by an exceptionally elevated mood and uncontrollable emotional expression. This often occurs to people who suffer from bipolar disorder, accompanied with symptoms of depression (e. g. lack of sleep and irritability).

Hypomania is a lesser form of manic syndrome which does not impede normal functioning.