Table 2

 Typical causes of mild hyperprolactinaemia mimicking microprolactinoma

*Especially in the presence of a coincidental microadenoma.
SSRIs, selective serotonin reuptake inhibitors.
• Hormonally inactive pituitary adenoma causing pituitary stalk compression
• Mammosomatotroph adenoma (that is, growth hormone adenoma co-expressing prolactin)
• Antidopaminergic drugs (metoclopramide, domperidone, risperidone, sulpiride, phenothiazines, SSRIs)*
• Stress (for example, acute anxiety about impending venesection)*
• Polycystic ovarian syndrome*