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Updated: Jul 7, 2026

3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
Published on: June 2, 2014
Relationship between high prolactin levels and migraine attacks in patients with microprolactinoma
1Operative Unit of Neurology, S Giovanni di Dio Hospital, Via Largo Bologna, 88900 Crotone, Italy. nico_bosco@libero.it
Abstract:
The pathophysiology of pituitary-associated headache is unknown, although structural and functional features of the tumour are proposed mechanisms. The objective of this study was to evaluate whether headache in a population with pituitary micro-adenomas was related to hyperprolactinemia. We recruited 29 patients with microprolactinoma and headache: 16 with migraine (group A) and 13 with tension-type-headache (group B). The prolactin (PRL) levels measured during attacks of headache were significantly higher in nine patients (56%) of group A and in one patient (8%) of group B. In four of the nine patients of group A, PRL increased after thyrotropin-releasing-hormone (TRH) test and induced severe attacks. After dopamine-agonist (DA) treatment, the headache improved in seven (44%) patients of the group A and in two (15%) patients of the group B. Three of the four patients in whom the TRH-test induced headache attacks, improved after DA treatment. We suggest that hyperprolactinemia may contribute to development of pain in migraine subgroups and further TRH-test could be used to predict which patients could benefit by DA therapy.
Insights
Hyperprolactinemia may contribute to migraine in patients with pituitary micro-adenomas. Elevated prolactin levels during headaches suggest a link, with dopamine-agonist therapy showing improvement in some patients.
Area of Science:
- Endocrinology
- Neurology
- Headache Medicine
Background:
- The exact cause of pituitary-associated headaches remains unclear.
- Proposed mechanisms involve structural and functional aspects of pituitary tumors.
Purpose of the Study:
- To investigate the relationship between hyperprolactinemia and headaches in patients with pituitary micro-adenomas.
- To assess the efficacy of dopamine-agonist therapy in this patient group.
Main Methods:
- Studied 29 patients with microprolactinoma and headache, divided into migraine and tension-type headache groups.
- Measured prolactin (PRL) levels during headache attacks and after thyrotropin-releasing hormone (TRH) stimulation.
- Assessed headache improvement after dopamine-agonist (DA) treatment.
Main Results:
- Significantly higher PRL levels were observed during headaches in 56% of migraine patients versus 8% of tension-type headache patients.
- TRH stimulation induced severe headaches in 4 out of 9 migraine patients.
- Headache improved in 44% of migraine patients and 15% of tension-type headache patients after DA treatment.
Conclusions:
- Hyperprolactinemia may play a role in the development of pain in specific migraine subgroups.
- The TRH test could potentially identify patients who may benefit from dopamine-agonist therapy for pituitary-associated headaches.
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