Narcolepsy

Tom suffers from narcolepsy.

Tom has narcolepsy.

I suffer from narcolepsy.

I'm suffering from narcolepsy.

Another common feature of narcolepsy is cataplexy, which is a sudden loss of muscle tone in response to strong emotion (such as laughing, surprise, or anger).

While Grumpy couldn't sleep due to insomnia, Sleepy had narcolepsy.

Excitement-induced narcolepsy caused him to sleep through the most important events of his life.