Although numerous investigations have been conducted to clarify prognostic parameters of general anesthesia complications, unpredictable side effects occur and vary widely from benign to catastrophic (
12). General anesthesia is a high-risk procedure for respiratory function impairment for the reason of using mechanical ventilation (
4), while one of the most important benefits of hypnotic anesthesia is the lack of need for mechanical ventilation. Cognitive dysfunction and delirium are other post-operative complications of both general and regional anesthesia as consequences of the usage of anesthetic drugs (
13).
Local anesthesia also has its adverse reactions such as pain, edema, bruise, infection, hyperalgesia, and muscle Trismus due to needle penetration in the skin and some adverse reactions that are related to the complications such as local or systemic toxicity, allergic and idiosyncratic reactions (
3). Lidocaine is widely used as an anesthetic choice for blepharoplasty because of a rapid onset of its effect (1.5 min), intermediate length of efficacy (1.5 - 2 h), and good toleration (
14). However, allergic reactions to lidocaine are rising in prevalence because of the growing application of this group of medications or the possibility of re-exposure to various substances characterized by a similar chemical structure. This phenomenon makes the risk of using this agent higher for anesthesiologists in surgical procedures (
15).
Several studies have shown that hypnosis can change an individual's perception of pain and make a significant reduction in postsurgical pain intensity, the consumption of analgesics, and rates of post-operative pain in patients who underwent hypnosis during the entire surgical procedure (
16,
17). A meta-analysis study revealed that patients who received hypnosis during the surgical operation had comparable advantageous outcomes rather than the others. It was revealed that the application of hypnosis in patients resulted in a significant impact on variables such as anxiety, pain, analgesic usage, recovery time, and treatment time (
18). Hypnosis comes into operation by changing the activation and connectivity of neuromatrix areas related to pain, including the amygdala and thalamus, striatum ACC, putamen, insula, prefrontal cortex, parietal cortex, contralateral somatosensory, and premotor cortices. The analgesic effect of hypnosis may be due to the reduction in activation of ACC, striatal, and thalamic areas (
7,
19).
Based on the available scientific literature, there is no case of blepharoplasty surgery that has been done just by hypnosis and with no use of analgesics or anesthetics. There was only one article that surveyed hypnosis in blepharoplasty that had been combined with local anesthesia (
20). The present study examined hypnotic anesthesia for blepharoplasty as an alternative to local anesthesia. The case presented herein is the first blepharoplasty procedure performed solely by hypnosis, and no type of local or general anesthesia was used. The patient was placed into a hypnotic trance before the surgery and maintained throughout the surgery by the hypnotherapist.
The BIS monitor shows the consciousness level of a patient that is usually needed to maintain between 40 to 60 in general anesthesia. BIS score upper than 60 demonstrated light anesthesia, and as it approaches 100, it shows a completely awake state (
11). In this study, the BIS scores of the patient showed that she was fully awake during the surgery; meanwhile, she was in communication with the hypnotherapist, and no sign of pain or discomfort (neither verbal nor facial) was expressed by the patient.
In conclusion, hypnosis is a safe and cost-effective modality, especially when it is practiced by a well-trained, experienced, licensed healthcare provider and may be used as an alternative to local or general anesthesia (
7,
21,
22). In this study, the surgery was performed successfully without any complications and with the advantage of no need for analgesia postoperatively as the patient reported the lack of pain. It is concluded that hypnosis is a good alternative to local anesthesia, and it may help reduce the consumption of analgesics.