Examination time: For women with normal menstruation, the 9th to 11th day after menstruation (about a week after menstruation) is the best time for examination, when estrogen has the least effect on the breast and the breast is in a relatively quiescent state, making it easy to detect lesions. Before menstruation and during menstruation, there are more hyperplastic nodules and swelling is obvious due to the influence of hormones in the body, and some smaller lesions are easily obscured by the hyperplastic glands and are not easily detected. Examination methods: Visual: Observe whether both breasts are symmetrical, whether there are abnormal protrusions, whether the skin is red, swollen, eczema, orange peel-like changes, and whether the nipples are sunken. Palpation: In standing or lying position, examine the right breast with the left hand and the left breast with the right hand, using the fingertips to palpate the entire quadrant of the breast, including the nipple under the areola. The same technique is used to palpate the armpit and observe any obvious enlarged lymph nodes. Squeeze: Squeeze the nipple after concentrating from the perimeter of the breast toward the nipple to observe any abnormal discharge and pay attention to the color of the discharge. If you find any abnormalities, you should consult a doctor or visit a breast clinic every 6 months to 1 year for a routine physical examination. Note: The best time to check is about a week after menstruation. Do not take the scratching and pinching method when self-consulting, otherwise it is easy to mistake normal or hyperplastic glands for lumps. Pay attention to the color of the fluid when you find nipple discharge, if it is bloody or coffee-colored, you should pay attention to it. If you can’t tell by yourself, please consult a breast specialist promptly.