Patients with papular urticaria can take a bath, but when taking a bath, pay attention to the temperature of the water, the high temperature of the water will stimulate the mast cells and may aggravate the patient’s symptoms. Therefore, patients with urticaria should pay attention to the following two points when bathing: 1, must control the temperature of the water to avoid excessive temperature, otherwise the higher water temperature will stimulate the patient to cause urticaria; 2, try to apply a moisturizer after bathing, moisturizers have the role of repairing the skin barrier, but also reduce the sensitivity of the mast cells, lowering the threshold of irritation. Moisturizers have many options and are caused by different ingredients, such as containing sebum and containing natural moisturizing factors. Therefore, medical moisturizers are generally recommended, such as the hospital’s own Vitamin E cream, compounded niacinamide including allantoin, and the patient can choose the right moisturizer, such as the one that feels comfortable and non-sticky after application, and moisturizes better. Some patients will buy Vaseline moisturizer in the market, in fact, the oil content of Vaseline is too high, which may make patients feel uncomfortable after application, and it is easy to block the hair follicles, which may lead to pimples and acne, therefore, patients should choose medical moisturizers with a reasonable configuration of ingredients.