What’s wrong with the hard lump on the right side of the breast that hurts when pressed during breastfeeding?

A hard lump on the right side of the breast that hurts when pressed during breastfeeding may be mastitis, or it may not be ruled out that it is related to breast hyperplasia, breast cancer and other conditions.
1. Mastitis: When a woman is breastfeeding, her milk may not be discharged in time, and the milk will be blocked, forming mastitis, which is common in women who are breastfeeding for the first time. The patient will have a hard lump in the breast, the hard lump area is hot and painful, and may be accompanied by pus discharge from the nipple.
2. Mammary gland hyperplasia: If breastfeeding has mammary gland hyperplasia, the patient may have swelling and pain in the breast, and the symptom will be aggravated before menstruation, and will be relieved gradually after that.
3. Breast cancer: If the patient has breast cancer, there will be obvious breast pain, swelling in the breast, orange peel-like changes in the breast, nipple blood overflow and other symptoms.
In addition, breast trauma, cardiothoracic diseases, herpes zoster and other diseases may also appear similar symptoms, it is recommended that breastfeeding women go to the hospital in a timely manner, and follow the doctor’s instructions for the appropriate examination and treatment.