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The document concludes that identifying the cause of amenorrhea is crucial for proper treatment.

This study found that women with acne resistant to conventional treatments had significantly higher levels of testosterone, DHEA‑S, prolactin, and LH, suggesting potential underlying hormonal disorders.

This study found significant hormonal differences, including elevated cortisol and androstenedione levels, in both male and female androgenic hair loss patients compared to controls, suggesting complex hormonal interactions in the condition.

This study suggests that moderate elevated prolactin levels are unlikely to cause significant hair loss in women, but still warrant further diagnostic investigation to rule out a prolactin-producing pituitary tumor.

This study found that women with acne had higher rates of hyperandrogenism and obesity, and higher androgen levels and BMI were linked to increased acne severity.

This study found that parenteral administration of cyproterone acetate was more effective than high-dose oral treatment in reducing facial hair diameter and improving dermatological parameters in patients with severe hirsutism, despite similar androgen suppression.

This review found that patients taking antiandrogens, 5 alpha-reductase inhibitors, and spironolactone have an increased risk of developing gynecomastia, potentially due to hormonal changes.

Low DHEA-S levels might be linked to alopecia areata and could be a potential treatment target.

In this study, elevated prolactin and DHEA-S levels along with reduced SBP were observed in fertile non-obese women with moderate body hair compared to controls, and ethynylestradiol plus desogestrel or cyproterone acetate treatment improved clinical outcomes by increasing SBP.

In this study, 48% of women with androgenetic alopecia showed hypothyroidism or hyperprolactinemia after TRH stimulation, suggesting these conditions may influence androgen metabolism and contribute to hair loss.

This study found that dihydrotestosterone treatment in female rats altered anterior pituitary gland gene expression, with significant repression of prolactin and inhibition of GnRH receptor gene expression, suggesting specific hormone production changes.

This chapter discusses common endocrine disorders affecting the pituitary, thyroid, and adrenal glands, and their impact on human fertility, emphasizing practical evaluation and treatment algorithms.

This study found that laparoscopic ovarian drilling significantly improved hormone levels and menstrual irregularity, leading to increased ovulation and a pregnancy rate of 26% among women with PCOS-related infertility.

This review discusses the role of various hormones in diffuse hair loss and emphasizes the need for further research to clarify their complex interactions and potential therapeutic implications, but reports no new clinical results.

This workshop review from the Australian Hair and Wool Research Society discusses findings in cutaneous biology and endocrinology but presents no new research results.

This review discusses the development, function, and complex roles of sebaceous glands in acne and suggests future acne treatments should target inflammation and lipid production; it reports no new clinical results.

This review explores the complex endocrine functions of human skin and its role as a peripheral endocrine organ, but reports no new clinical results.

This review discusses the effects of hormonal changes on hair follicles, concluding that hormones like androgens and estradiol significantly influence hair growth and cycle, while the roles of other hormones are still being researched.

This article reviews how various hormones may affect female sexual function and provides recommendations for diagnosing and treating endocrinologic sexual difficulties, but it reports no new clinical results.

This article discusses the role of human hair follicles in neuroendocrinology and suggests potential new therapeutic targets by examining how neuromediators influence hair growth, pigmentation, and stem cell biology in organ cultures.

This study found that in captive mouflon rams, reproductive and physical maturation, marked by changes in hormone levels and physical attributes, progresses gradually across their life span, with sexual maturity tied closely to physical maturity.

This review examines the neuroendocrine mechanisms underlying seasonal changes in mammals and highlights areas needing further research, reporting no new experimental results.

In this study, transgender adolescents treated with testosterone for a median of 12 months experienced effective virilization, including voice deepening and increased hair growth, but also showed decreased HDL cholesterol and BMD z-scores, and increased hematocrit, with no short-term safety issues reported.

This review discusses how macro-environmental factors such as intradermal adipose tissue and sex hormones influence hair and feather stem cell niches, suggesting environmental targets for regenerative medicine, but reports no new clinical results.

This review discusses the relationship between PCOS and hirsutism, exploring inflammatory markers and treatment options, and concludes that combining metformin with OCP may benefit both normal weight and obese PCOS patients.

This review discusses the influence of androgens on hair and sebaceous growth, emphasizing that response may depend more on peripheral sensitivity than on hormone levels; it reports no new empirical results.

This review discusses hormonal influences on hair growth and suggests that understanding hormone-gene interactions may improve treatment of hirsutism and alopecia, but reports no new clinical findings.

This study suggests men with early androgenetic alopecia might have hormonal profiles similar to women with polycystic ovarian syndrome, potentially indicating risk for related health complications.

This study found that women experiencing diffuse hair loss had significantly lower levels of plasma sex-hormone binding globulin compared to controls, while their testosterone levels remained normal.

In this retrospective study, cyproterone acetate treatment in late-pubertal trans-girls was found to be generally safe and led to mild feminizing effects, with more rapid feminization occurring when combined with estrogens.