Definition
A nightmare is a disturbing dream that causes strong negative emotions, such as fear or anxiety. They often involve feelings of danger, helplessness, or terror. Nightmares can wake you up and make it difficult to fall back asleep. Occasional nightmares are common, especially during times of stress. Frequent nightmares, however, might indicate an underlying issue. Think of them as your brain's way of processing difficult emotions. Sometimes, facing your fears in the dream can help you overcome them in real life.