Breathing-related sleep disorder Breathing-related sleep
disorder is marked by sleep disruption caused by abnormal
breathing during sleep. The most common complaint of individuals
with breathing-related sleep disorder is excessive daytime
sleepiness, brought on by frequent interruptions of nocturnal,
or nighttime, sleep. A less frequent complaint is insomnia or
inability to sleep. Mental health professionals use the
Diagnostic and Statistical Manual of Mental Disorders also known
as the DSM to diagnose mental disorders. In the 2000 edition of
this manual (the fourth edition, text revision, also known as
DSM-IV-TR) breathing-related sleep disorder is listed as one of
several different primary sleep disorders. Within the category
of primary sleep disorders, it is classified as one of the
dyssomnias, which are characterized by irregularities in the
quality, timing, and amount of sleep. The DSM-IV-TR lists three
types of breathing-related sleep disorder: obstructive sleep
apnea syndrome (the most common type); ce