In oneirology, the impact of sleep disorders on dreaming can be significant. Sleep disorders such as insomnia, sleep apnea, and restless leg syndrome can interfere with the normal sleep process and disrupt the continuity of the dream cycle. As a result, individuals with sleep disorders may experience difficulty falling asleep, staying asleep, or have reduced dream recall.

In some cases, sleep disorders can result in vivid, intense, and/or recurring nightmares, which can have a significant impact on a person's quality of life. Additionally, sleep disorders can lead to excessive daytime sleepiness, decreased productivity, and increased risk of accidents.

Oneirology also recognizes that sleep disorders can have an impact on the content of dreams. For example, individuals with sleep apnea may experience vivid, intense, and/or recurrent nightmares related to suffocation or choking. People with restless leg syndrome may dream about being chased or trying to escape.

In conclusion, the impact of sleep disorders on dreaming can be significant and can lead to various physical, psychological, and emotional consequences. It is important for individuals with sleep disorders to seek proper medical treatment to address the underlying sleep disturbance and improve their overall sleep and dream experience.