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Schizophrenia and Macroprolactinoma: Is There a Deep Link?
Atefeh Bamarinejad1, Shidrokh Nasiri1, Fatemeh Bamarinejad1
1Isfahan Endocrine and Metabolism Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Advanced Biomedical Research
|October 19, 2020
Summary
Antipsychotic drugs like risperidone, used for schizophrenia, can increase prolactin levels. This case highlights a potential link between long-term use of these dopamine antagonists and the development of macroprolactinoma.
Area of Science:
- Endocrinology
- Neuropsychiatry
- Oncology
Background:
- Prolactinomas are the most common functional pituitary tumors.
- Dopamine agonists are primary treatments for prolactinomas.
- Antipsychotic drugs, particularly dopamine antagonists, are crucial for schizophrenia management.
Observation:
- A 29-year-old male with schizophrenia, treated for 8 years with risperidone, presented with a macroprolactinoma.
- Risperidone is a dopamine antagonist known to increase prolactin levels.
Findings:
- The patient's macroprolactinoma developed during long-term risperidone treatment.
- This suggests a potential iatrogenic cause for the pituitary tumor.
- Dopamine antagonist therapy may induce hyperprolactinemia and potentially stimulate prolactinoma growth.
Implications:
- Clinicians should be aware of the risk of drug-induced prolactinomas in patients on long-term dopamine antagonist therapy.
- Monitoring prolactin levels and pituitary health is crucial in schizophrenic patients receiving these medications.
- Further research is needed to elucidate the mechanisms by which dopamine antagonists may induce or promote prolactinomas.
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