Claim: Bruxism can disrupt sleep.

A sleep disorder , or somnipathy , is a medical disorder of the sleep patterns of a person or animal . Some sleep disorders are serious enough to interfere with normal physical , mental , social and emotional functioning . Polysomnography and actigraphy are tests commonly ordered for some sleep disorders .   Disruptions in sleep can be caused by a variety of issues , from teeth grinding -LRB- bruxism -RRB- to night terrors . When a person suffers from difficulty falling asleep and/or staying asleep with no obvious cause , it is referred to as insomnia .   Sleep disorders are broadly classified into dyssomnias , parasomnias , circadian rhythm sleep disorders involving the timing of sleep , and other disorders including ones caused by medical or psychological conditions and sleeping sickness .   Some common sleep disorders include sleep apnea -LRB- stops in breathing during sleep -RRB- , narcolepsy and hypersomnia -LRB- excessive sleepiness at inappropriate times -RRB- , cataplexy -LRB- sudden and transient loss of muscle tone while awake -RRB- , and sleeping sickness -LRB- disruption of sleep cycle due to infection -RRB- . Other disorders include sleepwalking , night terrors and bed wetting . Management of sleep disturbances that are secondary to mental , medical , or substance abuse disorders should focus on the underlying conditions .