Many women notice nipple discharge at various stages of life. Majority of the times the discharge is due to benign (non- cancerous) conditions of the breast. The discharge can vary in colour from watery, light yellow, milky, yellowish green or brown, or reddish, blood stained. It can be present in one or both sides at the same time. Nipple discharge can be seen coming out from a single duct opening or from multiple duct openings on the surface of the nipple. Many a times the nipple discharge is seen only after pressing below the nipple. Some women continue to have milky white discharge several months after discontinuing breast feeding. Common causes of nipple discharge are fibrocystic breast disease, duct ectasia, intra-ductal papilloma, etc. If the discharge is spontaneous (i.e. seen without pressing behind the nipple) or is seen to be coming from a single duct opening every time and is blood stained, then you are advised to consult your breast surgeon immediately. In addition to clinical assessment, you may be advised to undergo certain tests like ultrasound scan with high frequency probe, mammography, cytological examination of the discharge, or sometimes MRI of breasts, etc.