People who have sleep disorders can have a wide range of mood changes, which depend on the type and seriousness of the sleep disorder. Some sleep problems, like insomnia, sleep apnea, and narcolepsy, can really affect your mood and mental health.

Most of the time, the affects on mood can be seen pretty quickly, usually just a few days or weeks after having trouble sleeping. Not getting enough sleep or getting bad sleep can make you irritable, cause mood swings, anxiety, and even depression signs.

Getting rid of the underlying sleep disorder through changes in living, behavioral interventions, or medical treatments may help the person's mood. But the length of time it takes for mood changes to happen varies on how well the chosen interventions work and how the person responds to treatment.