Yeast infections may occur under large breasts and appear as bright red rashes. A topical anti-fungal cream is used to treat it. Seek medical care right away if you think you have a breast infection. Lumps and Bumps Breast cancer is extremely rare in adolescents. Since adolescent breasts are normally dense, firm and nodular, most of the lumps girls feel in their breasts are normal breast tissue or fibrocystic changes.
Fibrocystic changes are cyclic or menstrual-related breast changes.
Symptoms include breast pain or discomfort the week before menstruation. Breasts are usually tender and feel granular due to small microcysts, which may merge into a larger cyst that can be felt as a mass. The cysts may go away then recur with successive menstrual cycles. Oral contraceptives may be used for more severe cases. Of all breast masses that are surgically removed in adolescents, the most common type is the fibroadenoma.