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Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

Finasteride can cause one-sided breast enlargement, which disappears after stopping the drug.

Hair disorders are caused by a complex mix of biology, genetics, hormones, and environmental factors, affecting hair growth and leading to conditions like alopecia.

Hirsute women have lower type 2 17β-HSD enzyme levels, which improve with treatment.

Mutations in the androgen receptor gene cause Androgen Insensitivity Syndrome, affecting sexual development.

Mobile phone radiation may cause DNA damage in human ear hair follicle cells.

Hormonal therapy is a treatment option for acne, the only medical treatment for hirsutism, and the most promising for androgenetic alopecia.

Amenorrhea, or the absence of periods, should be evaluated by age 15 or within five years of early breast development, and is most commonly caused by conditions like polycystic ovary syndrome and hypothalamic amenorrhea.

Testosterone replacement therapy should be used for men with low testosterone levels and symptoms of hypogonadism, after careful diagnosis and considering individual needs.

The gene SDR5A1 is found in scalp hair of both hirsute and normal individuals, but it does not explain differences in hair growth.

Oral contraceptives may cause hair loss in women.

Hormones and genes affect hair growth and male baldness.

Some skin diseases and their treatments can negatively affect male fertility.

Natural herbal compounds might treat certain medical conditions by reducing DHT levels, but more research is needed to confirm their effectiveness and safety.

Monascus helps prevent baldness, prostate issues, and may be a natural alternative to medications.

The document concludes that treating androgen excess needs patience, managing expectations is important, and many drugs used are not officially approved, suggesting cosmetic options for mild cases.

Understanding how androgens work is key for creating new treatments for prostate issues and hair/skin conditions.

Hyperadrenocorticism in ferrets is linked to neutering and indoor housing, and is best treated with surgery and a deslorelin implant.

Panitumumab can cause excessive ear hair growth.

Women with moderate body hair have higher levels of certain hormones and may benefit from treatment that increases sex hormone-binding protein.

Finasteride effectively treats hair loss and enlarged prostate in men, with mild side effects.

A girl with Denys-Drash syndrome was misdiagnosed due to biotin affecting her hormone test results.

The document concludes that sex hormones are crucial for mammalian reproduction, health, and behavior, and require more research for therapeutic use.

The document does not determine if adults with aphallia are fertile.

Diagnosing sex development disorders requires combining medical history, physical exams, imaging, lab tests, and genetic data.

The man's fatigue and erectile dysfunction were improved by treating his obesity-related low testosterone without needing testosterone replacement.

Flutamide caused damage to male rat reproductive organs and may affect fertility.

Cyproterone acetate is used to treat conditions like prostate cancer, early puberty, excessive sexual drive, and female androgenization by affecting androgen functions and suppressing certain hormones.

Low testosterone might be a common cause of hair loss in male dogs.