Breast Milk Outside Pregnancy or in a Man
Check your symptoms and
find possible causes with AI for free
Reviewed By:
Yoshinori Abe, MD (Internal medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Please choose the symptom you are most concerned about.
It will help us optimise further questions for you.
By starting the symptom checker, you agree to the Privacy Policy and Terms of Use
Find another symptom
How Ubie can help you
With an easy 3-min questionnaire, Ubie's AI-powered system will generate a free report on possible causes.
Your symptoms
Our AI
Your report
Personalized Report
✔︎  When to see a doctor
✔︎  What causes your symptoms
✔︎  Treatment information etc.
Just 3 minutes.
Developed by doctors.
Learn More
Content updated on Jan 4, 2023
About the symptom
Lactation is the secretion and yielding of milk through the mammary glands, which are located in the breasts.
When to see a doctor
Seek professional care if you experience any of the following symptoms
Breast milk outside pregnancy or as a man
Possible causes
- Hyperprolactinemia
Excessively high prolactin (hormone that releases milk) levels in the blood. Causes include medications and brain tumors.
- Acromegaly
A condition caused by abnormally high levels of growth hormone in the blood. It is usually caused by benign (non-cancerous) tumors in the brain.
- Pituitary adenoma
Pituitary adenoma is a non-cancerous growth from the pituitary gland (a small, hormone producing gland in the brain). These are usually slow-growing and don't initially cause symptoms. However, they can grow large enough to press on nearby structures, causing symptoms.
- Mastopathy
- Hypopituitarism
Questions your doctor may ask about this symptom
Your doctor may ask these questions to check for this symptom
Are you producing breast milk inappropriately (even though you have not been pregnant or given birth, or are a man)?
Other Related Symptoms
Similar symptoms or complaints
Symptoms from the same body system / part
Symptoms treated by the same specialty
Reviewed By:
Yoshinori Abe, MD (Internal medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Just 3 minutes.
Developed by doctors.
Ubie is supervised by 50+ medical experts worldwide
Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan