Dream recall, nightmares, lucid dreams, and emotional intensity all decreased between the first and third waves of the COVID-19 pandemic in a large Italian sample. People whose general psychological distress improved during that period reported fewer nightmares and less nightmare distress than those whose distress stayed the same or worsened. Poor sleep hygiene was a strong predictor of nightmare distress among the group that did not improve. The findings suggest that people adapted to the pandemic over time and that nightmares are closely tied to well-being, with both stable traits (age, sex) and sleep-related factors influencing nightmare features.
During the COVID-19 lockdown, a large Italian sample reported more frequent nightmares and dreams compared to a population-based sample. Predictors of high dream recall included young age, female gender, not having children, and sleep duration. High nightmare frequency was predicted by young age, female gender, changes in napping, sleep duration, intrasleep wakefulness, sleep problem index, anxiety, and depression. Higher emotional features of dream activity occurred in workers who stopped working, people with relatives or friends infected by or who died from COVID-19, and those who changed sleep habits. These findings support the continuity hypothesis linking daily experiences to sleep mentation and the arousal-retrieval model linking poor sleep to nightmares.