Sleep medicine

Prevea sleep medicine is devoted to the diagnosis and treatment of sleep disturbances and disorders in children and adults.

A male teenager sleeping in a bed A male teenager sleeping in a bed

Regional Sleep Disorders Center

Our Regional Sleep Disorders Center in Green Bay is accredited by the American Academy of Sleep Medicine (ASSM) and provides a full range of diagnostic and treatment procedures for disorders of sleep and maintaining wakefulness for children and adults. Our board-certified sleep technologists are also registered respiratory therapists. 

Our Sleep Disorders Center at HSHS St. Nicholas Hospital in Sheboygan also provides a full range of diagnostic and treatment procedures with state-of-the-art equipment and testing facilities.

Key services

  • Excessive daytime sleepiness  
  • Narcolepsy  
  • Obstructive sleep apnea  
  • Childhood sleep disorders/concerns
Circadian rhythm disorders
Problems with the sleep-wake cycle that make you unable to sleep and wake at the right times.
Being unable to stay awake during the day. This includes narcolepsy, which causes extreme daytime sleepiness.
Being unable to fall asleep and stay asleep. This is the most common sleep disorder.
Acting in unusual ways while falling asleep, sleeping or walking from sleep—such as walking, talking or eating.
Restless leg syndrome (RLS)
A tingling or prickly sensation in your legs, along with a powerful urge to move them.
Sleep apnea
A breathing disorder where you stop breathing for 10 seconds or more during sleep.

Sleep disorders: A brief overview

There are different causes for sleep disorders, including:
  • Medical conditions such as heart disease, lung disease, nerve disorders and pain
  • Mental illness, including depression and anxiety
  • Medications
  • Genetics
There are also some factors that can contribute to sleep problems, including:
  • Caffeine and alcohol
  • An irregular schedule, such as working the night shift or swing shifts
  • Aging. As we age, we often get less sleep or spend less time in a deep, restful stage of sleep. We also become more easily awakened.
 The symptoms of sleep disorders depend on the specific disorder. 
Sleep disorders are diagnosed with a sleep study. The most common types of sleep studies monitor and record data about your body during a full night of sleep. Other types of sleep studies may check how quickly you fall asleep during daytime naps or whether you are able to stay awake during the day. 
While the treatments for sleep disorders depend on which disorder you have, healthy sleep habits and other lifestyle changes, such as healthy diet and exercise are important to your overall health and well-being.
Sleep disorders are conditions that disturb your normal sleep patterns. Did you know that there are more than 80 different sleep disorders?

While some people who feel tired during the day have a true sleep disorder, others may simply be experiencing a common problem of not allowing enough time for sleep. It’s important to get enough sleep each night. The amount of sleep you need depends on several factors, including your age, lifestyle, health and whether you have been getting enough sleep recently. Most adults need seven to eight hours of sleep each night.
Sleep is a complex biological process that occurs while you are unconscious, but your brain and body functions are still active. When you sleep, both your brain and body are doing several important functions that help you stay healthy and functional. When you don’t get enough quality sleep it can affect your physical and mental health; therefore, affecting your thinking and your activities of daily living. 

So, how much sleep should we really be getting? According to the Centers for Disease Control (CDC), adults should sleep seven or more hours each night for optimal health. Insufficient sleep (or short sleep) is defined as less than seven hours of sleep daily. 

More than one-third of U.S. adults report insufficient sleep.
Middle aged man sitting on edge of bed looking tired

Resource extras

Sleep diary. Click to learn more about what you can do if you can’t sleep and to download a free sleep diary.

Best sleep tracker apps. Click to get a list of the seven best sleep apps for iPhone and Android from the American Sleep Association.

Meet our physicians and providers

Daniel Monroy Chaves
Daniel Monroy Chaves, MD

Critical Care and Pulmonary Medicine Physician

Gurminder Dhillon
Gurminder Dhillon, MD

Pulmonary, Critical Care and Sleep Medicine Physician

Musab Nusrat
Musab Nusrat, MD

Sleep and Pulmonary Medicine Physician

Schedule your appointment today

Find a location near you to schedule an appointment with one of our sleep medicine specialists.