Blood in Breast: Causes, Symptoms, and When to See a Doctor

Potential Causes

• Hormonal: Imbalances during menstruation or pregnancy can cause tenderness, swelling, and bloody discharge.
• Trauma: Injury from sports, accidents, or tight/underwire bras.
• Nipple conditions: Eczema, contact dermatitis causing inflammation, irritation, and bleeding.
• Medications: Birth control pills, hormone therapy affecting breast tissue.
• Lumps/cysts: Benign growths may bleed if inflamed.
• Breast cancer: Rare, but spontaneous bloody discharge (non-injury) with other signs (shape/size change, lump) warrants evaluation.

Actions to Take

• Monitor: Track occurrence (timing, associated symptoms, discharge appearance).
• Seek medical advice: See primary care doctor or gynecologist. Further tests (mammogram, ultrasound, nipple cytology) may be recommended.
• Stay calm: Many causes are benign and manageable.

When to See a Doctor

Urgent

• Spontaneous bloody nipple discharge (non-injury)
• Skin changes (dimpling, puckering)
• Lump or thickening in breast or armpit

Within a Few Days

• Persistent or recurrent bloody discharge (even if period-related)
• Nipple discharge with pain, inflammation, or nipple changes
• Any new breast symptoms causing concern