Sleepwalking, also known as somnambulism, is a peculiar phenomenon that occurs when there is a disconnect between the body’s state of sleep and the mind’s consciousness. Classified as a parasomnia, which refers to any unwanted occurrence during sleep, sleepwalking is generally considered harmless, although it can occasionally lead to more concerning behaviors. While sleepwalking typically involves aimless walking for a brief period, it can also involve engaging in various activities such as eating, talking, using the bathroom, and even driving, making it potentially hazardous.
The Prevalence of Sleepwalking is Higher in Childhood than in Adulthood
Sleepwalking is a sleep disorder that is more common among children aged 3-12. Research shows that up to 16.7% of children in this age group experience episodes of sleepwalking. However, as individuals enter their teenage years and adulthood, the likelihood of sleepwalking decreases significantly.
A comprehensive study on sleepwalking, published in The Journal of Neurology in 1997, examined 11,220 participants aged between 33 and 60 years. The findings revealed that sleepwalking occurred in 3.9% of adult men and 3.1% of women. Interestingly, the study also demonstrated a correlation between sleepwalking in childhood and adulthood. Specifically, individuals who reported sleepwalking during their childhood were more prone to sleepwalking in their adult years.
Among adult men who experienced sleepwalking, 88.9% had a history of sleepwalking during childhood. Similarly, in women, 84.5% of sleepwalkers had a previous record of sleepwalking in their childhood.
The Genetic Link to Sleepwalking
Research suggests that there is a genetic component to sleepwalking, with individuals who have family members who have experienced sleepwalking or night terrors being more likely to also be affected. A study published in The British Journal of Psychiatry found that 80% of sleepwalkers had a family member who also experienced sleepwalking, and a staggering 96% of night-terror subjects had an affected family member as well.
While sleepwalking is generally more common and less severe than night terrors, both conditions share a common genetic predisposition. In fact, if one twin sleepwalks, the other twin is five times more likely to experience sleepwalking episodes, highlighting the strong genetic link.
However, it is important to note that even though sleepwalking has a hereditary component, it is also influenced by environmental factors. This is why some children may regularly sleepwalk while their siblings do not, despite sharing the same genetic predisposition.