Summary
Background
Androgenic treatment of female-to-male transgender patients may result in androgenetic alopecia (AGA). Use of 5-alpha-reductase inhibitors are useful as oral treatment of AA in men. There are no previous studies of the use of finasteride in transgender men as treatment of AGA.
Aim
To evaluate the effectiveness and safety of an oral 5α-reductase inhibitor (finasteride) for AA developed in transgender men.
Methods
This single-centre retrospective study enrolled female-to-male transgender patients with a clinical diagnosis of AGA to receive 1 mg of an oral type II 5α-reductase inhibitor for at least 12 months.
Results
In all, 10 patients were included in the study. All the patients received a clinical diagnosis of male-pattern AGA, with 90% classified as stage IV on the Norwood-Hamilton scale. Mean onset of AGA was 3.25 years after the introduction of androgenic treatment, and 70% of the patients had a family history of AGA. All the patients improved one grade on the Norwood–Hamilton scale after a mean of 5.5 months (range 4–6 months) since the start of finasteride treatment. Two patients stopped treatment for economic reasons and one stopped due to dyspepsia. No sexual or other adverse effects were observed. Patients were given periodic physical and analytical examinations by endocrinologists without any significant finding. Mean follow-up of patients was 16.2 months.
Conclusion
AA in transgender men has a delayed onset, and is clinically and therapeutically similar to the common male-pattern-AGA in cis-gender men.
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