Sonya L. Merrill, MD, PhD

Sleep Medicine Doctor

Dr. Sonya L. Merrill is a Sleep Medicine Doctor in Dallas, TX with special training and skill in disorders related to patient sleeping patterns and sleep quality. As a Sleep Medicine Doctor, Sonya L. Merrill, MD, PhD performs sleep quality testing, clinical condition assessment, sleep studies, and behavioral therapy. Sleep Medicine is a medical specialty focused on identifying sleep disorders and relieving pain, distress, and illness related to those disorders. Significant diseases and conditions treated by Sleep Medicine Doctors include REM behavior disorder (RBD), sleep paralysis, sleepwalking, sleep apnea, insomnia, recurring nightmares, shift work disorder, circadian rhythm disorders, teeth grinding (bruxism), night terrors, bedwetting, chronic fatigue syndrome (CFS), and restless legs syndrome (RLS). Medical tests, procedures and therapies provided by Sleep Medicine Doctors include physical examination, sleep studies, polysomnography, multiple sleep latency testing, maintenance of wakefulness testing, actigraphy, mental health evaluation, prescribing medication, and referral to other specialists as necessary.

An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.