Sudden infant death syndrome -LRB- or MISC@1 -RRB- Common causes of sleep disorders Changes in life style , such as shift work change -LRB- SWC -RRB- , can contribute to sleep disorders .

Sleepwalking : one of the parasomnias , see above Common causes of sleep disorders Changes in life style , such as shift work change or travelling over several time zones , can cause sleep disorders .
