There is some useful advice on assessment and management of Gynaecomastia on the patient.info website.
If malignancy is suspected please refer via the Breast - 2WW pathway.
Treatment will depend on the underlying cause.
Surgical treatment for gynaecomastia is not routinely commissioned in BNSSG CCG and is subject to the Breast Surgery (for males) individual funding policy.
Tamoxifen treatment is not routinely commissioned and is currently not on the BNSSG Formulary for this indication and so should not be prescribed.