The main symptoms are localized redness, swelling, pain, and no lump inside the breast when touched, which will most likely form an abscess. Secondly, it may be due to being in ovulation. A small number of women will have breast pain without lumps during ovulation, but the pain will disappear after ovulation, and breast pain will also occur before menstruation, with breast swelling and pain to touch, which will be relieved after menstruation. It may be due to breast enlargement and pain after pregnancy. After delivery, after abortion and after sexual intercourse, there may be no hard lumps but painful breasts, it is better to go to the hospital for examination.