Prolactinomas are the most common hormone-secreting pituitary tumors. It is a noncancerous (benign) pituitary tumor that produces a hormone called prolactin. This results in too much prolactin in the blood. These occur most commonly in people under age 40. They are about five times more common in women than in men, but are rare in children. Larger tumors are more common in men. They tend to occur at an older age. The tumor can grow to a large size before symptoms appear.
Treatment: Most prolactinomas respond well to treatment with medication in tablet form. Medication used to treat prolactinomas belongs to a group called ‘dopamine agonists’.The aim of any treatment is to normalise blood prolactin levels and reduce the size of large tumours
Side-effects: Side-effects of dopamine agonists can include nausea, vomiting, loss of appetite, dizziness and drowsiness. Side-effects are particularly noticeable with bromocriptine, which needs to be increased in dose gradually.