N64: Other disorders of breast
N64.3: Galactorrhoea not associated with childbirth
The breast is made up of fatty tissue, connective tissue and the mammary gland. Milk is produced in the mammary gland during and after pregnancy so that the child can be fed.
The milky discharge may occur spontaneously. Or it may occur when you put pressure on your breast. The milk is often discharged from both breasts. This can happen for a number of reasons. The milk may be discharged when you are under stress or do a lot of exercise. It may also happen during sex or when you are asleep. Other conditions sometimes cause the discharge. For example, the discharge may occur if various messenger substances in the body are not working properly.
Patient Disclaimer
The information provided on this page is for general educational purposes only. It is not intended for self-diagnosis and does not replace professional medical advice. Always consult your doctor or a qualified healthcare provider with any questions or concerns about your health.
If you see an ICD diagnosis code (e.g., on a medical report), be aware that doctors may also include additional indicators to express diagnostic certainty. Only a healthcare professional can interpret these codes accurately in the context of your individual case.
For a complete understanding of your condition and what the diagnosis means for you, please speak directly with your doctor.