The findings of this study showed that paradox therapy effectively reduced the COVID-19 anxiety in individuals suffering from this type of anxiety. According to
Table 3, the PTC treatment was effective in the experimental group in the posttest and follow-up phases and reduced the COVID-19 anxiety (P = 0.001). This finding implies the effectiveness of PTC in reducing anxiety in individuals with this type of anxiety. The present findings are in line with some other studies (
13-
17) regarding the effectiveness of paradox therapy in reducing the physical symptoms of anxiety.
Some studies examining the effectiveness of PTC in reducing anxiety symptoms compared to pharmacotherapy and cognitive-behavioral therapy indicate that the clinical significance and improvement percentage of the PTC treatment are higher than other therapies and that the PTC treatment is an appropriate and quick way to reduce anxiety symptoms (
14,
16,
18). In their research, Besharat and Naghipour (
14) examined the effect of the PTC model on an individual with anxiety disorder. Their study showed the effectiveness of this psychotherapy model and its acceptable stability after a 28-month follow-up period. In another study, Besharat (
18) also examined the effect of the PTC model on an individual with social anxiety disorder. The results of the three-session treatment and the three-years follow-up period indicated satisfactory changes as well as the stability and continuity of the treatment. In general, studies have confirmed the PTC model as a practical, short-term, and economical method in treating psychological disorders, including anxiety disorders, with the slightest likelihood of disease recurrence in mental disorders (
13).
The PTC model was used due to its shorter treatment duration compared to long-term treatments making individuals abandon it half-finished. This model plays a critical role in treating individuals highly resistant to treatment as it is based on symptom prescription. In this model, the therapist’s instructions and prescribed tasks are all functions of the principles minimizing the anxiety of performing tasks and maximizing the patient’s potentials to obey. The model principles, including inseparability of paradox from PTC, prescription of the same disease symptoms, the delayed execution of tasks, and the exclusive reliance on practical treatment techniques, pave the way for a practical, emotional experience and consequently the realization of therapeutic changes as quickly and efficiently as possible. The ultimate goal of this fast and highly short-term treatment is to make some changes in the “ego” level and in its relation and distance to the “id” and the "super-ego," thereby leading to the “ego” strength (i.e., a degree of strength predicting the stability of treatment changes and the sharp decline in the recurrence of symptoms) (
19).
According to the findings, paradox therapy effectively reduces the physical symptoms of COVID-19 anxiety in individuals suffering from this type of anxiety. The findings in
Table 4 indicate that the PTC treatment was effective in the experimental group in the posttest and follow-up phases (P = 0.002) and reduced the physical symptoms of the COVID-19 anxiety. This concept indicates the effectiveness of PTC in reducing the physical symptoms of COVID-19 anxiety. The present findings are in line with some other studies (
13-
17) regarding the effectiveness of paradox therapy in reducing the physical symptoms of anxiety.
Coronavirus research has indicated that anxious individuals afraid of COVID-19 experience a coherent set of unpleasant and physiological symptoms aroused by thoughts or information about this infectious disease (
20,
21).
Excess COVID-19 anxiety may be a unique type of health anxiety, one of the unique symptoms of which is the fear of infection by COVID-19. According to previous studies on the COVID-19, anxiety, disgust, intolerance of hesitation, anxiety sensitivity, and fear of physical arousal are the predictors of excess anxiety triggered by COVID-19 (
22,
23).
One type of anxiety is disease-related anxiety. In particular, infectious diseases often trigger extreme fear and anxiety, thereby leading to many widespread disturbances in behavior and psychological well-being in society (
24).
The PTC model is one of the effective models in treating psychological disorders such as anxiety (
14,
16,
18). The model had remarkable features in terms of its therapeutic goals. The elimination of symptoms and coercive and imposed behaviors in individuals significantly contribute to the concerned treatment. The PTC model has been used to eliminate such symptoms. In this technique, individuals voluntarily face some of their symptoms (i.e., physical symptoms associated with the COVID-19 anxiety, including palpitations, headaches, tremors, fatigue and lethargy, and nightmares) and utilize complete reconstruction to make the symptoms and the experiences of those compulsive symptoms totally optional. Accordingly, any optional symptom or behavior is no longer a disease, a problem, or a problematic issue.
According to the results, paradox therapy effectively reduces the psychological symptoms of COVID-19 anxiety in individuals suffering from this type of anxiety.
Table 5 indicates that the PTC treatment in the experimental group was effective in the posttest and follow-up phases and reduced the psychological symptoms of the COVID-19 anxiety (P = 0.001). This finding indicates the effectiveness of the PTC treatment in reducing the psychological symptoms of the COVID-19 anxiety. The present findings are consistent with those in previous studies on the effectiveness of paradox therapy in reducing psychological symptoms of anxiety (
14,
15,
17,
18).
Psychological factors play a vital role in how individuals deal with the threat of an epidemic infection and its consequences (e.g., the loss of a loved one). Although many individuals cope well with the threat of an epidemic, many others experience high levels of anxiety or further mental health problems such as anxiety disorders and other clinical conditions (
25).
The main problem with anxious individuals is that they fill their minds with worrying illusions, thereby increasing their anxiety. Anxiety minimizes or sometimes completely destroys an individual’s power (
26) and affects his/her psychological well-being. Moreover, lack of scientific information also exacerbates such anxiety. In some cases, individuals look for more information to relieve their anxiety. Anxiety can make individuals misdiagnose true and false information as such, they may be exposed to false news (
11), thereby increasing the level of their anxiety induced by a new infectious disease.
The presence of disease anxiety in the community, especially in families at risk of disease (due to living with a sick person or a person having more contact with COVID-19 patients), indicates the need to use a therapeutic intervention. As an alternative treatment to prevent responses, PTC can eliminate maladaptive thinking strategies about anxiety. Paradox therapy is one of Frankel’s semantic therapy methods, which is used to help an individual realize that he/she does not look like his/her perceptual symptoms. Paradoxically, thoughts and feelings are typically designed to over-stimulate the way of thinking about fear or unwanted behavior (
27).
One of the goals of the PTC method was to eliminate all negative emotions arising from anxiety and its psychological symptoms. In the paradox therapy exercises, individuals are asked not to control their thoughts, including those about one’s death and their loved ones, fear of hospitalization, fear of infection with COVID-19 as well as relevant practices such as hand washing and disinfection of one’s hands and stuff. This is because one of the therapeutic goals is to communicate with thoughts to prevent resistance or complex perceptual analysis to eliminate maladaptive thinking strategies about being worry and having inflexible control over threats (
13). This awareness arouses when the psychological pressures imposed by controlling and blaming thoughts associated with washing and disinfecting hands and equipment and negative feelings about illness and death are eliminated. This implies that when the psychological stress of negative emotions is high, individuals having difficulty in regulating their emotions are inclined to rumination and anger posed by the condition to moderate their mental energy. By relieving COVID-19 anxiety and disconnecting thoughts and their behavioral cycles, this type of therapy makes individuals regulate their emotions better by reinforcing their “ego” and promoting awareness.
4.1. Limitations
Regarding the limitations of the present study, several points need to be mentioned. Diagnosing COVID-19 anxiety was exclusively limited to a questionnaire as such this study can also encompass the limitations mentioned for the questionnaires. This research was conducted in Jahrom, and necessary precautions should be taken in generalizing the findings. The lack of research on physical and psychological indicators in COVID-19 patients, small sample size, and the impossibility of holding in-person meetings were the other limitations of the present study.
4.2. Conclusions
According to the findings, paradox therapy can be used as an appropriate model to treat COVID-19 anxiety and its physical and psychological symptoms in patients.