The causes of tingling inside the right breast of women are as follows: 1, cystic hyperplasia: a common benign disease in women of childbearing age, the onset of which is related to endocrine hormone disorders, with the clinical manifestation of tingling in the breast and the pain aggravated before the menstruation, which can be relieved after menstruation, and can be accompanied by the formation of hyperplastic nodules of the mammary glands. 2, breast cancer: it is common among middle-aged and old women, and in the early stage, it can be only tingling in the breast, but when the disease progresses to the advanced stage, it can be accompanied by nipple Inversion or breast skin folds; 3, acute mastitis: breastfeeding women appear right breast inside tingling. There are many reasons that cause tingling in the right side of the breast, so you should go to the breast surgery department of a regular hospital to have a breast ultrasound examination to clarify the cause of the pain, and under the advice of the breast surgeon to actively treat the pain, and don’t take medication on your own to avoid delaying your condition.