The experimental group will be informed about the lower extremity cold immersion bath during the outpatient clinic controls and will be given a liquid meter digital thermometer that will allow them to check the cold water temperature at home. Patients will then be asked to do the lower extremity cold water immersion bath every day in their own home, for a total of four weeks, lasting 20 minutes in the evening before going to sleep.

It is recommended that the cold dip bath last for 20 minutes and the temperature of the water should be 15 0C for it to be effective on the symptoms.

At the end of four weeks, patients will be informed that they should come to the outpatient clinic again. When the patients come to the outpatient clinic, information about the application will be repeated and data collection forms will be applied by face-to-face interview method.

No intervention will be made to the control group, only the data will be collected at the same time as the study group.

Cold water immersion (15 degree celsius, 20 minutes)

This form was created by the researcher based on the literature. This form consists of questions which sociodemographic characteristics (age, gender, body mass index, marital status, living people, educational status, employment status, economic status), characteristics of health status (presence of chronic diseases, drugs used regularly, smoking and alcohol use), characteristics of varicose disease (how many years have varicose veins, which leg has varicose veins, family history of varicose veins, previous surgery for varicose veins and use of varicose stockings), and physical symptoms experienced due to varicose veins (expected to score according to 0-10 evaluation scale). according to the characteristics (how many years have varicose disease, which leg has varicose veins, family history of varicose veins, previous surgery for varicose veins and using varicose stockings).

VEINES-QOL/Sym is a standardised, 26-item, patient-reported questionnaire to assess the severity and frequency of venous insufficiency symptoms (questions 1,7; 10 items: heaviness, pain, leg swelling, night cramps, fatigue, burning sensation, throbbing sensation, itching, numbness in the legs, pain intensity), time of day when the symptoms are most pronounced (1 item, question 2), changes in the severity of symptoms during the past year (1 item, question 3), limitations in daily activities associated with venous insufficiency (9 item, questions 4,5,6), and the psychological impact on the functional status of patients with venous insufficiency measured during the previous 4 weeks (5 items, question 8). The scores are transformed as described in (14); the higher the result the better the quality of life.

The STAI-X is an extensively used self-administered inventory of two sections containing 20 items each, designed to explore anxiety in its temporary condition of "state anxiety" (STAI-S) and the more general and longstanding quality of "trait anxiety" (STAI-T). The STAI-S assesses how respondents feel "right now, at this moment", and the STAI-T targets how respondents "generally feel". Each item is scored on a 4-point Likert scale, with choices ranging from 1 ("not at all") to 4 ("very much so") for the state scale, and 1 ("almost never") to 4 ("almost always") for the trait scale. The minimum score for each section is 20, with a maximum score of 80. A total score of 40 or more indicates an anxious condition. The higher the score is, the more severe the anxiety condition.