Lesson
Map the Entire Twenty Four Hour System
A sleep complaint can arise from sleep opportunity, circadian timing, homeostatic drive, conditioned arousal, breathing, movement, medication, substances, medical disease, or a central hypersomnolence disorder.
- Sleep diary
- Circadian
- Opportunity
- Breathing
- Daytime
sleep system map
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Start with the clock
Record bedtime, intended sleep, latency, awakenings, final awakening, out-of-bed time, naps, schedule variability, shift work, light, caffeine, alcohol, cannabis, and medication timing.
Measure daytime consequence
Clarify sleepiness, fatigue, cognition, mood, accidents, near misses, driving, work, school, and unplanned sleep. Sleepiness and fatigue are related but not interchangeable.
Screen competing disorders
Ask about snoring, witnessed apnea, gasping, morning headache, leg urge, parasomnias, dream enactment, cataplexy, sleep paralysis, pain, reflux, nocturia, mood, mania, and substances.
Use testing for a question
Polysomnography is not a universal insomnia test. Use PSG, home sleep apnea testing, actigraphy, MSLT, laboratory testing, or specialist evaluation when the differential creates a specific indication.
Quick check
Lesson
Diagnose Insomnia Without Ignoring Its Causes
Chronic insomnia requires persistent difficulty initiating or maintaining sleep or early awakening despite adequate opportunity, with daytime impairment.
- Latency
- Maintenance
- Opportunity
- Three months
- Impairment
chronic insomnia
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Use the chronic threshold
Symptoms generally occur at least three nights weekly for at least three months and create daytime impairment. One brief stress reaction is not chronic insomnia disorder.
Separate opportunity from ability
A patient who allows only five hours in bed may have insufficient sleep rather than inability to sleep. Extend and stabilize opportunity before adding sedation.
Find perpetuating factors
Clock watching, variable rising, long naps, extended time in bed, conditioned arousal, alcohol, caffeine, pain, nocturia, and fear of sleeplessness can maintain insomnia after the original trigger fades.
Treat comorbidity without waiting
OSA, depression, PTSD, pain, and other conditions can coexist with insomnia. CBT-I can proceed with coordinated care rather than waiting for every comorbidity to disappear.
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Lesson
Use CBT-I as Active Treatment
CBT-I is a structured multicomponent treatment, not a list of sleep hygiene tips. It changes sleep opportunity, conditioned arousal, beliefs, and behaviors.
- Stimulus control
- Sleep restriction
- Cognitive work
- Relaxation
- Diary
cbti system
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Recondition the bed
Go to bed when sleepy, reserve bed for sleep and intimacy, leave the bed when unable to sleep when safe, return when sleepy, and keep a stable rise time.
Consolidate sleep opportunity
Sleep restriction or compression aligns time in bed with observed sleep, then expands it as efficiency improves. It requires monitoring and caution when sleepiness creates danger.
Change sleep effort
Address catastrophic predictions, clock monitoring, performance pressure, and attempts to force sleep. Relaxation supports reduced arousal but is not a demand to become calm.
Adapt for safety
Bipolar disorder, seizure risk, falls, pregnancy, safety-sensitive work, caregiving, and severe daytime sleepiness can require modification or specialist delivery.
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Lesson
Match the Drug to the Sleep Phenotype
Medication is secondary to CBT-I for chronic insomnia and should solve a defined onset, maintenance, or early-awakening problem without exporting next-day harm.
- Onset
- Maintenance
- Sleep window
- Interaction
- Stop plan
hypnotic selection
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Define the target
Sleep onset may favor shorter acting options, while maintenance needs sustained coverage. A drug with longer exposure can worsen morning function even when nighttime duration improves.
Protect the sleep window
Many products require seven or eight hours before planned awakening. Middle-of-the-night products have specific remaining-time and dose requirements.
Avoid sedative stacking
Alcohol, opioids, benzodiazepines, Z drugs, sedating antihistamines, antipsychotics, gabapentinoids, muscle relaxants, and cannabis can combine unpredictably.
Measure and exit
Set a target, duration, follow-up, adverse-effect screen, and discontinuation plan. Persistent insomnia after initiation requires diagnostic reassessment rather than indefinite automatic refills.
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Lesson
Respect GABAergic Hypnotic Risk
Zolpidem, eszopiclone, and zaleplon enhance GABA-A signaling. They differ in duration but share impairment, dependence, and complex sleep behavior concerns.
- Zolpidem
- Eszopiclone
- Zaleplon
- Complex behavior
- Driving
gaba hypnotics
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Use product-level dosing
Zolpidem products differ by release and route, with sex-specific starting doses in current labeling. Eszopiclone can cover onset and maintenance, while zaleplon has very short exposure.
Apply the boxed warning
Sleep walking, sleep driving, cooking, sex, injury, and death can occur while not fully awake, even at recommended doses. A prior episode is a contraindication to these agents.
Protect next-day function
Use only when the required sleep window remains, avoid alcohol and other depressants, and reassess driving and hazardous work. Food can delay selected products.
Do not confuse nonbenzodiazepine with no dependence
These Schedule IV drugs can be misused and can cause dependence and withdrawal. Older adults remain vulnerable to falls, delirium, and cognitive effects.
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Lesson
Target Wake Drive or Circadian Signaling
Dual orexin receptor antagonists reduce wake drive, while ramelteon targets MT1 and MT2 circadian signaling and low-dose doxepin reduces histaminergic wakefulness.
- Daridorexant
- Lemborexant
- Suvorexant
- Ramelteon
- Doxepin
orexin melatonin
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Use current orexin options
Daridorexant, lemborexant, and suvorexant treat adult insomnia and require a sufficient sleep window. Daridorexant was not included in the 2023 source chapter's earlier selection map.
Recognize mechanism-specific risk
Orexin antagonists are contraindicated in narcolepsy and can cause next-day impairment, sleep paralysis, hallucinations, complex sleep behavior, and cataplexy-like symptoms.
Use CYP3A logic
Strong CYP3A inhibitors or inducers can make selected orexin antagonists unsuitable, while moderate inhibitors require product-specific dose limits.
Use noncontrolled alternatives deliberately
Ramelteon is useful for sleep onset and has a major fluvoxamine interaction. Low-dose doxepin targets maintenance and is not equivalent to an antidepressant dose.
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Lesson
Treat the Patient Who Must Wake Up
Hypnotic safety is determined by breathing, falls, cognition, mood, substances, pregnancy, liver function, driving, and the ability to remain in bed.
- Older adult
- OSA
- Depression
- Pregnancy
- Driving
special safety
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Protect older adults
Benzodiazepines, Z drugs, and first-generation antihistamines can increase delirium, falls, fractures, and cognitive impairment. CBT-I remains preferred.
Protect breathing
Assess OSA, COPD, neuromuscular disease, obesity hypoventilation, opioids, and other depressants. Product labeling varies, but no sedative substitutes for treating the breathing disorder.
Protect mood and behavior
Evaluate depression, suicide risk, mania, psychosis, parasomnias, and substance use. New behavioral change or complex sleep behavior requires prompt action.
Use reproductive evidence by product
Discuss pregnancy and lactation using drug-specific evidence and the consequences of untreated illness. Do not use obsolete pregnancy letters or abrupt unsupervised changes.
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Lesson
Recognize the RLS Pattern and Its Iron Biology
RLS is an urge to move with unpleasant leg sensations that begin or worsen at rest, improve with movement, and are worse in the evening or night.
- Urge
- Rest
- Movement
- Evening
- Iron
rls diagnosis iron
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Use all diagnostic features
The sensory urge, rest relationship, movement relief, and evening predominance form a pattern. Cramps, neuropathy, akathisia, arthritis, edema, and vascular pain require different care.
Measure iron status
Check ferritin and transferrin saturation. Sleep medicine treatment thresholds are higher than anemia-only thresholds because brain iron deficiency can matter without anemia.
Find secondary causes
Pregnancy, chronic kidney disease, iron loss, neuropathy, and selected neurologic disease can contribute. Evaluate bleeding and iron deficiency causes when present.
Remove exacerbators
Review sedating antihistamines, dopamine blockers, serotonergic antidepressants, caffeine, alcohol, sleep deprivation, and other patient-specific triggers.
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Lesson
Prevent Augmentation While Treating RLS
Current AASM guidance places gabapentinoids and iron ahead of routine dopamine agonist use for many adults because long-term dopaminergic augmentation is now better recognized.
- Gabapentin
- Pregabalin
- Iron
- Dopamine agonist
- Augmentation
rls treatment
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Use current preferred pharmacology
The 2025 AASM guideline strongly recommends gabapentin enacarbil, gabapentin, and pregabalin for adults with RLS, with patient-specific review of kidney function, sedation, edema, misuse, and respiratory depressants.
Use iron by measured status
Oral or intravenous iron selection depends on ferritin, transferrin saturation, absorption, severity, response, and current thresholds. Recheck rather than treating indefinitely without data.
Recognize augmentation
Earlier daily onset, increased intensity, shorter latency at rest, need for higher doses, and spread beyond the legs suggest dopaminergic augmentation rather than ordinary progression.
Do not escalate blindly
Pramipexole, ropinirole, rotigotine, and levodopa now carry conditional recommendations against standard use in the AASM guideline because of augmentation. A supervised transition may be needed.
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Lesson
Separate Sleepiness From Fatigue and Cataplexy From Collapse
Narcolepsy is a central hypersomnolence disorder with chronic excessive daytime sleepiness and possible REM intrusion phenomena.
- Sleepiness
- Cataplexy
- Sleep paralysis
- PSG
- MSLT
narcolepsy diagnosis
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Define excessive sleepiness
Patients have an irresistible tendency to sleep or unintended lapses despite adequate sleep opportunity. Fatigue without sleep propensity is a different symptom.
Identify cataplexy
Emotion-triggered bilateral muscle weakness with preserved consciousness strongly supports narcolepsy type 1. Distinguish syncope, atonic seizure, functional episodes, and medication effects.
Recognize REM intrusion
Sleep paralysis and hypnagogic or hypnopompic hallucinations can occur but are not diagnostic alone because they also occur in the general population and with sleep deprivation.
Prepare diagnostic testing
Document adequate sleep and stable schedule, treat significant OSA, and manage confounding medications before PSG and MSLT. Poor preparation can produce misleading sleep-onset REM periods.
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Lesson
Treat Wakefulness, Cataplexy, and Nighttime Sleep as Separate Targets
Narcolepsy treatment combines behavioral safety and targeted therapy for daytime sleepiness, cataplexy, disrupted nighttime sleep, hallucinations, and paralysis.
- Modafinil
- Solriamfetol
- Pitolisant
- Oxybate
- Stimulant
narcolepsy treatment
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Use current guideline options
AASM strongly recommends modafinil, pitolisant, sodium oxybate, and solriamfetol for adults with narcolepsy. Armodafinil and traditional stimulants have conditional roles.
Protect interactions
Modafinil and armodafinil can reduce hormonal contraceptive effectiveness. Pitolisant has CYP and QT considerations, while solriamfetol can increase blood pressure and pulse.
Use oxybate safeguards
Oxybate products can improve cataplexy, daytime sleepiness, and disrupted nighttime sleep but carry CNS depression, abuse, respiratory, psychiatric, sodium-load, dosing, and restricted-distribution considerations.
Build nonpharmacologic safety
Regular schedule, strategic naps, workplace or school accommodations, driving restrictions when sleepy, and treatment of OSA complement medication but do not replace effective therapy when sleepiness remains dangerous.
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Lesson
Connect Nighttime Treatment to Daytime Life
A successful sleep plan improves sleep continuity or timing without sacrificing alertness, cognition, breathing, mood, driving, or autonomy the next day.
- Night
- Day
- Safety
- Function
- Relapse
integrated sleep recovery
Align circadian timing, sleep pressure, behavior, and treatment exposure.
Track disorder-specific outcomes
For insomnia track latency, wake after sleep onset, time in bed, efficiency, distress, and daytime function. For RLS track timing, severity, iron, and augmentation. For narcolepsy track sleepiness, cataplexy, naps, and safety.
Record exposure precisely
Document drug, exact formulation, dose, time, meals, sleep window, adherence, interactions, response, next-day burden, and reason for change.
Protect high-risk activities
Ask about driving, machinery, heights, childcare, medication administration, and occupational duties. A treatment that increases unsafe sleepiness has failed a core outcome.
Create a relapse and escalation plan
Name early signs, behavioral steps, medication contingencies, contact pathways, urgent symptoms, and the date and owner of follow-up.
Quick check
Module test
Check the connections.
Each attempt draws 10 questions from the complete 100 question bank.
Each attempt draws a fresh set and rearranges the answer choices.
References
Current clinical foundation.
Lecture material was synthesized with the following contemporary guidance. Verify local policy and current guidance before applying clinical information.