UV phototherapy precautions for patients with psoriasis

1- Preparation of skin before phototherapy: It is best to take a bath before the night before or during the morning of the phototherapy. Clean the skin. After bathing, feel the skin is too dry, then apply some moisturizer to moisturize, moisturize and increase the hydration of the cuticle, which can reduce the light. Reflection, which is conducive to the penetration of light. Keep the proper distance between the body and the machine when the light is shining. The rash is facing the tube, not too close or too far. The area to be illuminated should be fully exposed and should not be blocked by underwear or hair. When there is a rash on the inside of the armpit or upper arm, raise your hand behind the pillow and do not hang down naturally. In addition, when there is no rash on the face, cover it with a dark towel or clothing to avoid blackening the face. Also close your eyes or wear goggles to avoid eye damage.

2- do not adjust the phototherapy dose: the first time the light, the doctor will set an initial dose according to the patient's condition (usually the sub-minimum erythema), and then according to the condition and skin tolerance, each increment of 0.1 or 10%, After the condition is stable or improved, it is necessary to maintain a certain dose and then gradually reduce the amount. Adjusting the dosage by itself is easy to make the curative effect worse, and it is prone to sunburn reaction.

3-do not arbitrarily change the frequency of phototherapy: the doctor will set a suitable phototherapy frequency according to the patient's condition and the time of the open time, the general psoriasis can be 2 to 3 times a week, that is, two phototherapy intervals of 2 to 3 days, the maintenance period Sometimes it can be taken once a week or every two weeks. Too high or too low a frequency affects the efficacy.

4- do not arbitrarily expand or reduce the body light parts: this situation has encountered: for example, some patients only have psoriasis on the chest and belly at the beginning, each time these parts are illuminated, the phototherapy dose is 0.5 (J / Cm2) gradually reached 1.5, and then found new psoriasis on the thigh. When the dose was 1.6, the thigh was also lighted. Since the thigh did not pass the tolerance of 0.5 to 1.5, the sudden dose of 1.6 will definitely A sunburn reaction occurs, and severe erythema, blisters, and pain may occur. The correct way is to contact the doctor to develop a reasonable treatment plan for the new site.

5- how to use external medicine and illuminating: psoriasis patients often need phototherapy combined with topical medication, for Jinnuol, halomethasone, Dalux and other ointments, in order to avoid the absorption of UV rays after the ointment is wiped, or UV Affect the structure and efficacy of the drug, should go home after phototherapy and rub the ointment.

6-Avoid eating photosensitized foods and drugs during phototherapy: Some foods increase the skin's sensitivity to ultraviolet light and increase the chance of sunburn. Common light-sensitive foods are: snail, gray cabbage, Chinese milk vetch, snow, lettuce, fennel, leeks, leeks, celery, radish leaves, spinach, buckwheat, coriander, canola, mustard, fig, citrus, lemon, mango, Pineapple, fungus, mushrooms, winter bamboo shoots, etc. In addition, some drugs also have photosensitivity, such as commonly used antihypertensive drug nifedipine, antibiotic levofloxacin, diuretic hydrochlorothiazide, non-steroidal anti-inflammatory drug aspirin, etc., should be avoided during phototherapy, such as the need to use the disease, or other diseases during phototherapy If you are taking other medicines and you are not sure if you have photosensitivity, you should contact your treating physician promptly.

7-the treatment area skin to avoid sun exposure: there are ultraviolet rays in the sun, but the spectrum is too wide, the energy is too low, almost no therapeutic effect, but the sun exposure in the treatment area may cause the skin to be resistant to ultraviolet light, reduce the effect, may also make the skin dry Black, causing absorption of treatment light is too high and adverse reactions occur.

8-How to deal with discomfort in phototherapy: Ultraviolet phototherapy is very safe. Very few people have burning sensation, tingling sensation, erythema, blisters. Very few patients will have rash or itching, which will appear in the phototherapy process or after the phototherapy home. In the above reaction, phototherapy should be suspended, and the doctor should be contacted in time to deal with it. Usually, it can be restored intact, and occasionally coloration will occur, but it can be recovered after a period of time.

9-Consolidation treatment: psoriasis phototherapy usually takes 10 to 12 times a course of treatment. Due to individual differences, the degree of improvement of each patient's condition may be different. After the end of the treatment, the doctor should be contacted in time to evaluate the curative effect and formulate the current condition according to the current condition. One-step treatment plan.

10- regular life, healthy mentality: psoriasis is a chronic recurrent disease, need to adjust the mentality, to avoid mood swings, treatment requires patience, not too impatient. Do not use the remedies indiscriminately, otherwise it will easily lead to aggravation of the disease into erythroderma or liver and kidney function damage. Avoid staying up late, drinking, and reducing immunity. Avoid eating irritating food such as seafood, chili, and lamb. Avoid catching a cold. Proper exercise and relaxation help to restore psoriasis.