Amitriptyline-Induced Hyperprolactinemia in a Pediatric Patient
Abstract
Hyperprolactinemia is an endocrinological disorder that might arise from various physiologic or pathologic conditions, as well as from pharmacologic sources. These pharmacologic sources include antidepressants, antipsychotics, and dopamine receptor-blocking agents. Amitriptyline is classified as a tricyclic antidepressant. While it is FDA-approved primarily for the treatment of depression, amitriptyline also demonstrates efficacy in managing various other conditions, such as anxiety, post-traumatic stress disorder, insomnia, chronic and neuropathic pain, and migraine prevention. We present a case of a 10-year-old patient with a history of autism spectrum disorder (ASD), attention-deficit/hyperactivity disorder (ADHD), and migraine headaches who was incidentally found to have elevated prolactin levels while taking amitriptyline for migraine prophylaxis. While risperidone, an antipsychotic that can be used for ASD management, is commonly known to induce hyperprolactinemia, the association between amitriptyline and elevated prolactin is less frequently described in the literature. This case underscores the necessity for healthcare providers across various specialties to be aware of amitriptyline-induced hyperprolactinemia.
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