Now accepting Telehealth appointments. Schedule a virtual visit.

Day Time Sleepiness

Rajiv M. Joseph, MD, PhD, FAAN -  - Board Certified in Neurology

Rajiv M. Joseph, MD, PhD, FAAN

Board Certified in Neurology & Sleep Medicine located in Plano, TX

Everyone feels tired during the day from time to time, but if you’re always tired during the day, it could be a sign of a sleep disorder or other condition that increases your risk of severe health conditions like hypertension, heart attack, and stroke. At his accredited sleep center in Plano, Texas, Rajiv Joseph, MD, PhD, FAAN, provides extensive sleep studies to diagnose the condition causing your daytime fatigue and treatments to help you get the sleep you need. Call Rajiv Joseph MD PA or book an appointment online today if sleepiness is interfering with your life or health.

Day Time Sleepiness Q & A

What causes daytime sleepiness?

A wide range of factors and health conditions can disrupt your sleep and cause daytime sleepiness.

Obstructive sleep apnea (OSA) is one of the most prevalent causes of interrupted sleep and daytime fatigue. OSA is a condition where your soft palate descends into your airway when you sleep and stops you from breathing. The condition causes snoring, which wakes you up and startles you into breathing. You can wake several times per hour every night when OSA is left untreated.

Insomnia is another condition that disrupts your sleep, causing you to have trouble falling or staying asleep. Certain medications and health conditions like thyroid disorders can also affect your sleep.


How is the cause of daytime sleepiness diagnosed?

Dr. Joseph and his team provide a variety of sleep studies to diagnose the condition disrupting your sleep. He may suggest in-office studies, or you can take equipment home with you so you can follow your normal routine and sleep in the comfort of your own bed while collecting data about your sleep, known as a home sleep study (HST). Some of the other tests Dr. Joseph and his team use include:

Polysomnogram (PSG)

A polysomnogram is the most common form of sleep study. It’s an in-office, overnight study where a technician monitors your brain activity, respiration, and movement throughout the night. A polysomnogram often reveals issues like OSA or restless leg syndrome.

Multiple sleep latency test (MSLT)

Dr. Joseph or a sleep technician administers the multiple sleep latency test during the day. The test measures how quickly you fall asleep during the day and helps determine the cause of daytime sleepiness. It’s also a useful tool to diagnose narcolepsy.

Maintenance of wakefulness test (MWT)

The maintenance of wakefulness test measures how well you can resist falling asleep. It helps determine how safe it is for you to drive a car or operate other machinery if you have extreme daytime fatigue.


How are sleep disorders treated?

Dr. Joseph provides customized treatments to address the specific condition interrupting your sleep and causing your daytime sleepiness. For example, if you have OSA, you may benefit from a night guard that holds your jaw in a position to prevent your airway from being blocked or a continuous positive air pressure (CPAP) machine to send a steady stream of oxygen into your lungs while you sleep.

If you’re frequently sleepy during the day and have trouble staying awake, call Dr. Joseph or schedule a consultation online today for expert diagnosis and treatment.