Question

What are nightmare ?​

Answer 1

Answer:

rightening dreams, usually during REM sleep, that are normal and common in children under 10 and can also affect teens and adults.

Answer 2

Answer:

A nightmare is a disturbing dream associated with negative feelings, such as anxiety or fear that awakens you. Nightmares are common in children but can happen at any age. Occasional nightmares usually are nothing to worry about.