What Causes Breast Pain in Teenage Girls?

It’s common for adolescent girls to experience breast tenderness during puberty—a normal, physiological response to hormonal changes. As the body begins producing higher levels of estrogen and progesterone, breast tissue undergoes rapid development, including ductal proliferation, lobular formation, and fat deposition. This growth can cause aching, soreness, or sensitivity—often bilateral and cyclical in older teens who have begun menstruating.

While most cases are benign and self-limiting, clinicians should consider other potential contributors when evaluating persistent, unilateral, or disproportionate pain. These include ill-fitting bras (particularly those with underwire or inadequate support), localized trauma, mastitis (rare in non-lactating adolescents but possible with skin breaks or infection), or, very rarely, benign masses such as fibroadenomas. Inflammatory conditions like costochondritis may also mimic breast pain due to referred discomfort from the anterior chest wall.

Reassurance and supportive care—such as wearing well-fitted, soft-support bras and applying warm compresses—are typically sufficient. Over-the-counter analgesics like acetaminophen or ibuprofen may be used short-term if discomfort interferes with daily activities. However, evaluation by a pediatrician or adolescent medicine specialist is warranted for pain lasting more than several weeks, associated signs like fever or erythema, palpable lumps with irregular borders or fixation, or asymmetrical breast development that deviates significantly from expected Tanner staging.