The causes of redness, swelling and pain in the pubic area are more, including allergy or tightness of underwear, perineal infection, excessive cleaning, etc., which are as follows: 1. Allergy or tightness of underwear: women wearing chemical fiber or other materials underwear may cause redness, swelling and pain symptoms in the pubic area. In addition, if women’s underwear is too tight, it can also stimulate the vulva, causing swelling and pain; 2, perineal infections: such as vaginitis, urinary tract infections and other inflammatory diseases, which can cause redness, swelling and pain in the perineum; 3, excessive perineal cleansing: women wash the perineum, especially middle-aged and elderly women, there may be excessive cleaning phenomenon, which can cause an imbalance in the bacterial flora, resulting in aseptic inflammation in the perineum, resulting in redness, swelling, pain and other symptoms. Redness, swelling, pain and other symptoms.