Although there is no general agreement on the definition of fear of childbirth, this fear is characterized by worries about childbirth assessed by several specific scales (
1). Fear of childbirth has a global prevalence of 20% - 25% and 14% for its severe type (
2). Based on another study, this fear is between 8% and 30% around the world, and this heterogeneity depends on its different definitions and the tools used to measure (
3). The prevalence rate of anxiety during pregnancy is 35% greater compared with women of the same reproductive age (19.8%) (
4). A pregnant woman’s emotional and physical experience makes unique and context-specific anxiety, which can evoke an effective reaction (
5).
However, negative emotions and maternal fear of childbirth have usually been ignored, since it can lead to tension in communication, reduced thinking power, and lack of ability and perception of the mother during pregnancy (
6). Mother’s uncertainty about her ability for vaginal delivery and fear of perineal tearing (
7) or the fear of the unknown (
8) lead to choosing elective cesarean (
9). Women staying longer in the hospital pay more that is estimated to be 38% more than treatment costs and imposes huge costs on health systems in countries (
10). The need for epidural anesthesia and postpartum trauma has increased, whereas the rate of mother breastfeeding has reduced (
11). Also, there is a strong correlation between postpartum depression and fear of childbirth (
12). Moreover, women’s satisfaction is dependent on health care staff through labor, which can be used in hospital policies as feedback to improve maternity-related systems (
13). Labor and childbirth experiences are complex and multidimensional (
14). Women’s birth satisfaction may have an impact on their health and children as an experience that can be achieved sooner or later. For example, postpartum depression, post-traumatic stress disorder, lack of ability to resume sexual activity, increased number of cesarean cases, negative attitude towards the baby, and lack of compatibility with the maternal role are the factors affecting childbirth dissatisfaction (
15). According to the aforementioned reports, childbirth fear and anxiety are undeniable facts, and there is a need for interventions for reducing these discomforts (
16). Snoezelen room with multiple sensory stimulations has been considered worldwide as a complementary therapy (
17). There is a lack of comprehensive research in this field, but a qualitative study showed that women experienced subjective relaxation, comfort, and a sense of control in labor using a Snoezelen delivery room (
18). The results of a systematic review showed that environmental interventions had a lower effect on women’s ability to cope with pain and their personal relationships (
19). The results of another systematic review revealed the evidence on how birthing environments affect outcomes of labor and birth is incomplete (
20). The term “Snoezelen room” was used by Hulsegge and Verheule in 1975 with the combination of two Dutch words describing a process of controlling all sensory systems in a safe environment, i.e., Dozelen and Snoezel that means seeking out and relaxing with creating satisfaction in people (
21,
22). Snoezelen room is a multidimensional stimulus environment useful for relaxation and distracting mind through an increase in the secretion of endorphins from the brain and an increase in the capacity of individuals to adapt pain (
23). Aromatherapy (
24) is one of the ways, which is used in the Snoezelen room, as the olfactory system has a direct and immediate effect on the nervous system (
25). Music therapy during childbirth can reduce anxiety, pain, and postpartum depression and increase satisfaction, which it is also another component of a Snoezelen room (
26) and improves physical symptoms, hormones, and stabilizes vital signs via stimulating the brain, increasing endorphins, inhibiting sensory-environmental receptors. Light music can make a slow breathing rate, reduce heart rate, and relax the body (
27,
28). It seems that the use of complementary medicine in most Iranian pregnant women is acceptable, and like many other countries, such as Germany, over 50.7% of women use it during pregnancy (
29). Also, massage therapy and yoga are some of the most common methods for pregnant women in Australia and the United States (
30). For example, Hatha yoga training in pregnancy reduced the fear of childbirth (
31).
There are other non-pharmacological methods for improving the emotional and psychological aspects of pain, leading to appropriate decisions and feelings of strength and self-control in the progress of the delivery. Using interventions as non-pharmacological methods (
32), like acupuncture, which has no impact on maternal or fetal outcomes (
33), hypnosis that had been effective in soothing fear and pain and the increasing sense of control during labor (
34), water childbirth (
35), which has not approved in a systematic review because of bias (
36), yoga (
37,
38), and physical and emotional support compatible with pain (
39) have been effective accordingly. However, studies on the effect of the Snoezelen room on childbirth are scarce, and whether a Snoezelen room can make women comfortable during labor and birth should be assessed. Consequently, it can be considered as a complementary method to reduce pain, the anxiety of birth, and making the childbirth process a pleasant and enjoyable event. As a complementary method, it can reduce severe anxiety and fear and decrease the tendency for selective cesarean (
40). Therefore, non‐drug interventions should be selected for pain relief and better satisfaction with childbirth (
41), especially in nulliparous women who had not previous negative birth experience.