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Dermatoendocrinol. 2012 Jan 1;4(1):65-71. doi: 10.4161/derm.19472.

Hair loss and hyperprolactinemia in women.

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1
Hair and Nail; Bonn, Germany.

Abstract

In the literature of the past 30 years there are only some publications concerned with hair loss and hyperprolactinemia in women. Therefore, the relevance of hyperprolactinemia was evaluated in 40 women with diffuse alopecia.Hair loss was assessed by clinical appearance and the pluck trichogram. 82.5% of the female patients had diffuse hair loss and 17.5% had androgenetic alopecia.The highest prolactin values measured were 1390 ng/ml and 255 ng/ml. Six patients had values between 150-80.4 ng/ml and 10 between 79.1-51.7 ng/ml. All others had prolactin values below 50 ng/ml. Fifteen untreated patients with elevated prolactin levels could be followed up. Without any prolactin-inhibiting drugs, reductions and normalizations beside moderate fluctuations could be detected.Thyroid-specific diagnostics showed in 95% of the patients a normal thyroid function. 2.5% had a slight hyperthyreoidism and 2.5% had a slight hypothyreoidism. No female patient had clinical signs of androgenization and the determined androgens testosterone, androstendione and dihydroepiandrostendione were in the normal range.According to these results, moderate elevated prolactin levels in association with diffuse or androgenetic hair loss can be neglected as causative for the hair loss, because there is no evidence that they have an influence to the pattern, the extent or the duration of the hair loss. These results are supported by investigations of other authors who described only in high doses of prolactin an inhibiting effect on human hair follicles in vitro. Nevertheless, moderate constantly elevated prolactin levels should induce further diagnostics to exclude a prolactin-producing tumor of the pituitary gland.

KEYWORDS:

diffuse hair loss; hyperprolactinemia; women

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