Pain in the right breast near the armpit area during breastfeeding is usually considered a condition such as lymphadenitis, mastitis or breast cancer.
In the case of mastitis, women often have concomitant milk stagnation or a broken nipple and the breast is swollen and painful due to a bacterial infection.
In the case of lymphadenitis, there is often also localised warmth, redness and swelling of the skin and pain.
In the case of breast cancer, the skin of the breast may appear orange peel-like and a lump may be palpable, at which point the diagnosis needs to be clarified by pathological examination.
In addition, breast enlargement can also occur during breastfeeding, resulting in unilateral or bilateral breast swelling and discomfort. It is advisable to go to hospital to clarify the exact cause.