26th April 2024

A 28-year-old man has experienced three distinct periods in the last year where he felt on top of the world, required little sleep, and believed he had special talents.

A 28-year-old man has experienced three distinct periods in the last year where he felt on top of the world, required little sleep, and believed he had special talents. During these times, he started multiple business ventures, spending large sums of money. These episodes lasted for about a week each and were followed by periods where he felt hopelessly depressed, fatigued, and contemplated suicide.

Which is the most likely diagnosis?