Can people cry in their sleep?

Yes, people can cry in their sleep. This phenomenon is known as nocturnal crying or sleep-crying. It is not uncommon, especially in children, but it can also happen to adults. Sleep-crying is often associated with nightmares or other sleep disturbances, but it can also occur without any apparent trigger. Although it can be distressing to witness someone crying in their sleep, it is usually harmless and does not require medical intervention.