Understanding Sleep Disorders
Sleep disorders affect millions of Americans — yet most go undiagnosed for years. Learn about the conditions we specialize in and find out if your symptoms match.
The silent suffocator
Sleep Apnea
Sleep apnea is a condition where breathing repeatedly stops and starts during sleep. The most common type — obstructive sleep apnea (OSA) — occurs when throat muscles relax and block the airway. Central sleep apnea is less common and involves the brain failing to send proper signals to breathing muscles.
Why Diagnosis Matters
Untreated sleep apnea raises the risk of hypertension, heart disease, stroke, type 2 diabetes, and depression — making early diagnosis critical.
Treatment Options at MWCSD
Common Symptoms
- Loud snoring (especially OSA)
- Gasping or choking during sleep
- Witnessed pauses in breathing
- Excessive daytime sleepiness
- Morning headaches
Risk Factors
- Excess weight or obesity
- Neck circumference > 17" (men) / 15" (women)
- Narrowed airway or enlarged tonsils
- Male sex and age > 40
- Family history
- Alcohol, sedative, or tranquilizer use
- Smoking
- Nasal congestion
When sleep refuses to come
Insomnia
Insomnia is the inability to fall asleep, stay asleep, or get restorative sleep — even when the opportunity is there. Chronic insomnia (lasting 3+ months) affects roughly 10–15% of adults and is the most commonly reported sleep disorder. It can exist independently or alongside other medical and psychiatric conditions.
Why Diagnosis Matters
Chronic insomnia increases risk for depression, anxiety, substance abuse, workplace accidents, and cardiovascular disease. Effective treatment dramatically improves quality of life.
Treatment Options at MWCSD
Common Symptoms
- Difficulty falling asleep at bedtime
- Waking up frequently during the night
- Waking too early and not returning to sleep
- Non-restorative or poor-quality sleep
- Fatigue and low energy during the day
Risk Factors
- Stress, anxiety, or depression
- Irregular work schedules or shift work
- Stimulant use (caffeine, nicotine)
- Poor sleep hygiene
- Chronic pain or medical illness
- Certain medications (steroids, beta-blockers)
- Age > 60 (women more than men)
- Previous history of insomnia
The brain's broken wake switch
Narcolepsy
Narcolepsy is a chronic neurological disorder affecting the brain's ability to regulate the sleep-wake cycle. People with narcolepsy experience overwhelming urges to sleep at inappropriate times. Type 1 narcolepsy involves cataplexy (sudden muscle weakness triggered by emotion) and a deficiency of hypocretin, a brain chemical that promotes wakefulness.
Why Diagnosis Matters
Without proper treatment, narcolepsy severely impairs work, driving safety, relationships, and mental health. Misdiagnosis is common — years often pass before the correct diagnosis is made.
Treatment Options at MWCSD
Common Symptoms
- Excessive daytime sleepiness (EDS)
- Sudden muscle weakness (cataplexy) — Type 1 only
- Sleep paralysis upon waking or falling asleep
- Hypnagogic hallucinations (vivid dream-like visions)
- Fragmented nighttime sleep
Risk Factors
- Age 10–30 (peak onset) or second peak in 50s
- Family history of narcolepsy
- Autoimmune conditions
- Brain injury or tumor (rare)
- Infection with H1N1 influenza (some evidence)
- HLA-DQB1*06:02 gene variant
The irresistible urge to move
Restless Legs Syndrome
Restless Legs Syndrome (RLS), also called Willis-Ekbom disease, is a neurological sensory disorder that causes uncomfortable sensations in the legs — and an irresistible urge to move them. Symptoms typically worsen in the evening or at rest and are temporarily relieved by movement. Periodic Limb Movement Disorder (PLMD) is a related condition involving repetitive limb jerking during sleep.
Why Diagnosis Matters
Untreated RLS leads to chronic sleep deprivation, daytime fatigue, depression, and significant quality-of-life impairment. Treatment brings rapid and often dramatic relief.
Treatment Options at MWCSD
Common Symptoms
- Uncomfortable sensations in legs (crawling, aching, tingling)
- Strong urge to move the legs, especially at rest
- Symptoms worse in the evening and night
- Temporary relief with movement (walking, stretching)
- Leg kicking or jerking during sleep (PLMD)
Risk Factors
- Family history (50% of cases are hereditary)
- Iron deficiency or low ferritin
- Pregnancy (especially third trimester)
- Chronic kidney disease
- Peripheral neuropathy
- Certain medications (antihistamines, antidepressants)
- Female sex
- Middle age and older adults
Too much sleep, never enough rest
Hypersomnia
Idiopathic Hypersomnia (IH) is a chronic neurological disorder characterized by excessive daytime sleepiness despite adequate — often prolonged — nighttime sleep. Unlike narcolepsy, IH does not involve cataplexy, and naps are typically unrefreshing. Patients often describe a persistent 'sleep drunkenness' or severe grogginess that's difficult to shake off.
Why Diagnosis Matters
IH profoundly impacts daily functioning, employment, and mental health. It is frequently misdiagnosed as depression, laziness, or simple fatigue — specialized testing is essential.
Treatment Options at MWCSD
Common Symptoms
- Excessive daytime sleepiness despite 9–11+ hours of sleep
- Prolonged, unrefreshing naps
- Severe sleep inertia ('sleep drunkenness')
- Difficulty waking from sleep
- Cognitive fog and difficulty concentrating
Risk Factors
- Family history of hypersomnia
- Depression or anxiety disorders
- Viral infections (post-viral onset reported)
- Autoimmune conditions
- Head trauma
- Female sex (2:1 ratio)
- Age of onset typically in late teens or 20s
Acting out your dreams
REM Behavior Disorder
REM Sleep Behavior Disorder (RBD) occurs when normal muscle paralysis during REM sleep is absent, causing people to physically act out vivid — often violent — dreams. Patients may shout, kick, punch, or leap from bed while still asleep. RBD is a significant early biomarker for Parkinson's disease, Lewy body dementia, and multiple system atrophy.
Why Diagnosis Matters
RBD can cause serious injury and serves as a critical warning sign for neurodegenerative disease. Early diagnosis enables protective intervention and neuroprotective trial enrollment.
Treatment Options at MWCSD
Common Symptoms
- Physically acting out dreams (kicking, punching, yelling)
- Vivid, often violent or unpleasant dream content
- Falling out of bed or injuring self / bed partner
- Relatively preserved memory of the dream
- Onset typically age 50+ (men more than women)
Risk Factors
- Male sex, age > 50
- Certain antidepressants (SSRIs, SNRIs, TCAs)
- Narcolepsy
- Parkinson's disease (up to 40% have RBD)
- Lewy body dementia
- Autoimmune encephalitis
- Brainstem lesions or strokes
Not Sure What You Have? We'll Find Out.
Our board-certified sleep physicians have diagnosed thousands of patients across Mid-Michigan. A consultation is the first step toward restful sleep.