Fringe - All About Hair

This blog explores topics in 'Trichology' (the orthodox sciences of human hair). We welcome you either as an interested visitor or a prospective student seeking to study trichology to share your comments and experience. As the archives continue to accumulate, probably at some point they will become a useful reference for all. This hair loss forum may help you to grow hair too!

Dopamine and Hirsutism

hair follicle
hair follicle (Photo credit: Wikipedia)
Dopamine is a novel, direct inducer of catagen in human scalp hair follicles in vitro - Langan - 2012 - British Journal of Dermatology - Wiley Online Library:

There are many reports of reversible hair loss following treatment with dopamine agonists like levodopa. This study provides evidence that dopamine promotes anagen to catagen conversion and has a negative effect on hair growth. Hence the authors tout dopaminergic agonists as the next big thing in hirsutism management.

Surprisingly the study does not mention the sample size and there is a statement that non-parametric tests were performed when the number was not big enough to ensure normal distribution. This makes me skeptical about the power of the study. The D2R conjuncture based on its murine homologue also needs experimental proof.

Treatment of unwanted facial hair in females (especially laser hair removal) is a multi-million dollar industry. The preliminary findings of this study may still be relevant in guiding research in this field in the right direction.

Here is a summary  and DermKnowledgeBASE Triples* on hirsutism.
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About Me

As a Dermatologist and Informatician my research mainly involves application of bioinformatics techniques and tools in dermatological conditions. However my research interests are varied and I have publications in areas ranging from artificial intelligence, sequence analysis, systems biology, ontology development, microarray analysis, immunology, computational biology and clinical dermatology. I am also interested in eHealth, Health Informatics and Health Policy.


Bell Raj Eapen
Hamilton, ON