Mania (noun)

1. A state of abnormal excitement or enthusiasm, typically characterized by frenzied or agitated behavior.
2. A strong desire or interest in something, typically something excessive.

Origin:

From the greek μανία (mania), from μαίνομαι (mainomai, "to rage, to be furious").

Examples:

1. The mania for collecting stamps had taken over his life.
2. The stock market was in the grip of a speculative mania.
3. The fans were in a state of mania as their team scored the winning goal.
4. He had a mania for cleanliness and would wash his hands dozens of times a day.
5. The mania for the latest technology is driving people to buy the new smartphones.