Sleeping sickness is a parasitic disease transmitted by the tsetse fly in tropical Africa.

He developed radiation sickness after being exposed to high levels of radiation.

Many astronauts experience space sickness during their space missions.

I experienced morning sickness during the early stages of pregnancy.

I always get motion sickness when I ride in a car.

He suffered from mountain sickness during his hike.

I am sick and tired of this constant noise.

I always get sick during flu season.

The captain ordered the crew member to report to sickbay immediately.

He spent several weeks on a sickbed recovering from the flu.