What do we call abnormal events such as nightmares, sleep terrors, and sleepwalking that occur during sleep or during the twilight time between sleep and waking?

Question

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Abnormal events such as nightmares, sleep terrors, and sleepwalking that occur during sleep or during the twilight time between sleep and waking are called parasomnias. REM disorders (A) refer to abnormal behavior during REM sleep, such as REM behavior disorder. Catalepsy (B) refers to a medical condition characterized by rigidity of the body and limbs, and loss of voluntary muscle control. Dyssomnias (D) are disorders that affect the amount, quality, or timing of sleep, such as insomnia or sleep apnea.

What Do We Call Abnormal Events Such as Nightmares, Sleep