What could cause nipple discharge in males when squeezed?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Nipple discharge in males is uncommon and should always be evaluated by a healthcare provider. Possible causes range from benign conditions—such as hormonal imbalances, certain medications, or gynecomastia—to more serious issues like infections, pituitary tumors, or breast cancer. Discharge that is bloody, occurs without squeezing, or affects only one breast warrants prompt medical attention.

Because male nipple discharge can signal a variety of underlying conditions, understanding your symptoms early is key to getting the right care. Take a free, instant, online symptom check to explore possible causes tailored to your situation and get clear guidance on what steps to take next.

Reviewed for medical accuracy: 07/20/2026

Important Next Steps

Learn causes of male nipple discharge See if discharge needs urgent care Discover if it could be serious Find OTC options for nipple symptoms Find a doctor for nipple discharge Explore home remedies for nipple discharge Understand likely causes of your discharge

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Explanation

Nipple discharge in males can happen for several reasons. According to the provided references, one common cause is hormonal changes, which can lead to a condition called benign galactorrhea. This is when milk or a milk-like fluid comes from the nipple, and it is usually not serious.

However, nipple discharge can also be a sign of other issues. For example, infections or inflammation in the breast tissue can cause discharge. Sometimes, the discharge may even be bloody, which can be concerning. In rare cases, nipple discharge might be linked to tumors or other growths in the breast tissue.

If you notice nipple discharge, especially if it is bloody or happens without squeezing, it is important to see a doctor. To help identify what might be causing your symptoms, you can start by taking this free AI symptom checker before your appointment.

(References)

Morrogh M, & King TA. (2009). The significance of nipple discharge of the male breast. The breast journal, 19735390.
Rohn RD. (1984). Benign galactorrhea/breast discharge in adolescent males .... Journal of adolescent health care : official publication of the Society for Adolescent Medicine, 6429109.
Imamoglu M, Cay A, Reis A, Ozdemir O, Sapan L, & Sarihan H. (2006). Bloody nipple discharge in children: possible etiologies .... Pediatric surgery international, 16328337.

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