0 a very strong interest in something that fills a person's mind or uses up all their time:
1 a state in which someone directs all their attention to one particular thing:
Van Gogh suffered from acute persecution mania.
She's always cleaning - it's like a mania with her.
2 a very strong interest in the stated thing, especially among a large group of people:
3 a unusually strong and continuing interest in an activity or subject:
4 a mental illness that causes a person to be in a state of extreme physical and mental activity
