Bouts

Cancer patients often have to deal with debilitating bouts of nausea.

The poor girl regularly had bouts of fever, and her headaches became unbearable.

He is suffering from a mental illness that can lead to insomnia, depression, anxiety, inability to concentrate, loss of appetite, suicidal thoughts, high blood pressure, and bouts of uncontrolled aggression. This is a form of psychosis which is generally known in common parlance as "love."

Elisabeth was prone to bouts of melancholy.

We idealize everybody’s thinking, and even our own access to reasons, blithely attributing phantom bouts of clever reasoning to ourselves after the fact.

We put up with his little bouts of mischief.