Nicotine dependence involves adaptations that make continued nicotine use reinforcing and stopping uncomfortable. Cravings, irritability, concentration difficulty and other withdrawal experiences can maintain smoking. In schizophrenia, these effects may interact with symptoms, routines and social…Continue Reading

Insomnia involves difficulty falling asleep, staying asleep or obtaining satisfactory sleep despite an opportunity to do so. The person may feel tired, frustrated or unable to function well during the day. In schizophrenia, worry, voices…Continue Reading

Circadian rhythms are approximately daily patterns in physiology and behaviour, coordinated by internal timing systems and environmental cues. Light, activity and social routines help align sleep with the day. Some people with schizophrenia experience delayed…Continue Reading

Excessive sleepiness means difficulty remaining alert during intended waking hours. It can arise from medication effects, insufficient sleep, fragmented sleep or disorders such as sleep apnoea. Sleeping for a long time does not exclude poor…Continue Reading

Sleep and psychiatric symptoms can influence one another. Voices, worry or threat beliefs may interfere with sleep, while sleep loss can worsen concentration, emotional regulation and unusual experiences. In some people, changing sleep is an…Continue Reading

Sleep routines provide consistent cues around waking, activity and winding down. Helpful plans are tailored to the person’s actual difficulty and circumstances. A stable waking time, manageable daytime activity and attention to caffeine or other…Continue Reading

THC is the main intoxicating component of cannabis and can alter perception, memory and threat interpretation. CBD has different pharmacology and does not produce the same typical intoxicating effects. Products vary widely in their content…Continue Reading