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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.

Korean patients with PCOS often have skin problems like acne and excess hair, with different symptoms based on their specific PCOS type.

Testosterone treatment can improve sexual function and bone density in women but may have adverse effects and requires more research on safety and guidelines.

Hormone imbalance is linked to Hidradenitis Suppurativa, a skin condition, and treatments like anti-androgenic therapy and metformin can help. It's also suggested to check patients for insulin resistance and Polycystic Ovary Syndrome.

Environmental factors and chemicals might affect hormone balance and contribute to common hair loss.

Protein tyrosine kinases are key in male pattern baldness, affecting skin structure, hair growth, and immune responses.

Melatonin, a hormone, can help protect skin from aging by reducing stress, inflammation, and damage, and may also help treat hair loss in women.

Retinoic acid affects skin and hair health by working with specific receptors, and its absence can lead to hair loss and skin changes.

Dihydrotestosterone and 5α-Reductase play a role in hair loss and prostate health, and finasteride can increase hair growth in men without affecting sperm production, but it doesn't work for postmenopausal women with hair loss.

Spironolactone is safe for treating female hair loss, but the safety of other drugs is uncertain.

Hormones like androgens, estrogen, thyroid hormones, and stress hormones can contribute to hair loss, and treatments target these hormonal imbalances.

Scientists created cell lines from balding patients and found that cells from the front of the scalp are more affected by hormones that cause hair loss than those from the back.

New treatments are needed for PCOS that target its genetic, hormonal, and metabolic causes.

Muscles can make their own androgens, which may help muscle growth.

Genetic changes in mice help understand skin and hair disorders, aiding treatment development for acne and hair loss.

Testosterone can slow hair growth in adult monkeys, but a blocker called RU 58841 can counteract this and potentially help hair regrow.

The compound 16 from the Merremia peltata plant could potentially be a good treatment for hair loss (alopecia) due to its strong activity and favorable skin absorption.

Low zinc and selenium levels in sheep are linked to hair loss and thyroid problems.

Genes and epigenetic changes are important in the development of Polycystic Ovary Syndrome.

Some lesser-known causes of PCOS include autoimmune issues, genetic mutations, and changes in the body's microbiome.

Acne severity is not related to the type or severity of androgenetic alopecia.

Cannabinoids may help treat various skin conditions.

Certain brain hormones and chemicals are linked to the development of Polycystic Ovary Syndrome.

Anti-androgen therapy might help protect against COVID-19 infection and reduce death risk.

Cannabinoids like CBD and THC may help treat non-cancer skin diseases, but more research is needed.

Curcuma aeruginosa Roxb. may help treat hair loss by affecting specific biological pathways.

Testosterone increases heart and blood pressure issues in rats with endotoxemia, and stopping testosterone production can reduce these problems.

Androgen suppression therapy (AST) doesn't significantly lower bladder cancer risk, but using finasteride, a type of AST, might reduce it. AST decreases recurrence-free survival but doesn't affect overall survival or progression-free survival. More research is needed to understand AST's benefits.

Androgen suppression therapy (AST) doesn't significantly lower bladder cancer risk, but using finasteride, a type of AST, might decrease the risk. AST also lessens the chance of cancer coming back but doesn't really affect survival rates. More research is needed to understand AST's benefits for different bladder cancers.

ATP-sensitive K+ channel subunits, particularly Sur2A, play a significant role in various cancers.