Breast Pain (Mastalgia) in a 19-Year-Old Female

Overview

Classification of Breast Pain

1. Cyclic Mastalgia (Most likely in a 19-year-old)

• Related to exaggerated premenstrual symptoms during the luteal phase
• Character: bilateral breast engorgement, heaviness, aching, tenderness
• Can last >1 week
• Most prevalent in women in their 3rd–4th decades, but common in teens too
• Accounts for two-thirds of all breast pain
• Hormone-driven (estrogen/progesterone fluctuations)

2. Noncyclic Mastalgia

• Independent of menstrual cycle
• Character: unilateral, achy, burning, intermittent or constant
• More common in the 4th–5th decades; less likely in a 19-year-old but possible
• May be idiopathic or from a discrete lesion (e.g., cyst)

3. Extramammary / Referred Pain

• Pain perceived in the breast but originating elsewhere:
  • Costochondritis (Tietze syndrome) — very common
  • Scapulothoracic bursitis (referred via intercostal nerves)
  • Chest wall muscle strain
  • Herpes zoster (before rash appears)
  • Rib fractures, radiculopathy

Differential Diagnosis for a 19-Year-Old

Breast cancer is extremely rare in a 19-year-old and an unlikely cause of breast pain.

History to Take

• Relation to menstrual cycle: cyclic vs. non-cyclic?
• Exact location: bilateral vs. unilateral, focal vs. diffuse?
• Duration and severity
• Any palpable lump?
• Nipple discharge?
• Oral contraceptive use or hormone therapy?
• Trauma or vigorous physical activity?
• Fever or skin changes (mastitis)?
• Chest wall tenderness on palpation?

Physical Examination

• Full breast exam: palpate all quadrants for masses, tenderness, lymph nodes
• Skin inspection: erythema, dimpling, nipple changes
• Chest wall palpation: press on costochondral junctions — if pain is reproduced, extramammary cause is likely (Tietze syndrome)
• Axillary lymph node assessment

Investigations

• Ultrasound is the first-line imaging in women ≤35 years (mammography has low yield in dense young breast tissue)
• Used to identify cysts, fibroadenomas, or discrete masses
• No imaging needed if pain is clearly cyclic, bilateral, and no palpable mass is present — reassurance is sufficient
• Labs generally not needed unless hormonal disorder suspected

Management

Step 1 — Reassurance (Most Important)

Step 2 — Non-pharmacologic

• Well-fitting, supportive bra (worn day and night) — associated with significant improvement; an ill-fitting bra carries a 3× risk of mastalgia
• Sports bra — shown in RCT to be more effective than danazol
• Exercise (3×/week) — improves quality of life beyond reassurance alone
• Pain diary — helps identify triggers (cycle, stress, activity)
• Discontinue OCP or hormone therapy if recently started

Step 3 — Pharmacologic (if symptoms persist)

Supplements (evening primrose oil, chamomile) are popular but evidence does not clearly support efficacy over placebo.

Red Flags Requiring Further Evaluation

• Palpable lump or mass
• Skin changes: erythema, dimpling, peau d'orange
• Bloody or spontaneous nipple discharge
• Unilateral persistent focal pain not responding to treatment
• Fever or systemic symptoms (suggests mastitis/abscess)
• Family history of BRCA mutation or breast cancer

• Berek & Novak's Gynecology, pp. 989–991
• Sabiston Textbook of Surgery (11th ed.), p. 1384
• Goldman-Cecil Medicine, Mastalgia & Benign Breast Disorders
• Robbins, Cotran & Kumar Pathologic Basis of Disease, p. 962