About three hours after he falls asleep, Bobby often sits up in bed screaming incoherently. Hismother tries to awaken him, but with no success. The next morning, he remembers nothing. Itappears that Bobby suffers from

A. night terrors.

B. narcolepsy.

C. sleep spindles.

D. sleep apnea

A. Night Terrors

Explanation:

Night terrors also known as sleep terrors are occurrences similar to nightmares involving intense screaming, intense fear, crying and thrashing while still sleeping. It is also often accompanied with sleep walking and all these while the person is still unconscious or in deep sleep.

The episodes often begin with screams and shouts, followed by sitting up on the bed with eyes wide open, heavy sweats, dilated pupils and heavy breathing among others.

Most times as well, the person who suffers from night terrors would have little or no memory of the event by the next morning.

Night terrors should be reported to medical practitioners if it continues for a long time, happens frequently and the safety of the victim is becoming a concern from aggressive episodes of thrashing and violent behavior.

If Bobby's episodes become more frequent and more violent, then Bobby's mother should report the case to a certified medical practitioner.