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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.

ICL is a condition with low CD4+ T cells like AIDS but not caused by HIV, and normal CD4+ T cell counts may vary between men and women.

Autoimmune liver diseases are likely linked to certain skin conditions like vitiligo and psoriasis.

Blocking the FGF5 gene in sheep leads to more fine wool and active hair follicles due to changes in certain cell signaling pathways.

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.

The study concludes that mutations in the AEBP1 gene can cause a form of Ehlers-Danlos syndrome and should be considered in diagnosis.

Hormones and genes affect hair growth and male baldness.

Women with PCOS have similar bone density to healthy women, but those who are obese have higher bone density at some body sites.

A 14-year-old girl with severe hair loss regrew her hair using upadacitinib.

Taxol damages hair growth cells, causing hair loss.

Men with less sun-sensitive skin have lower PSA levels, while men with more sun-sensitive skin have higher PSA levels.

Fat tissue stem cells show promise for repairing different body tissues and are being tested in clinical trials.

Polycystic Ovary Syndrome (PCOS) often leads to severe acne, and lifestyle changes and hormonal treatments can help manage it.

The guidelines recommend informed consent for gender-affirming treatments and stress the importance of personalized, culturally sensitive care for transgender individuals.

Lichen Planus is a less common condition affecting skin and mucous membranes, with various types and associated risk factors, challenging to diagnose, significantly impacts life quality, and may have a risk of cancerous changes in oral lesions.

Noggin is necessary to start the hair growth phase in skin after birth.

Men are more likely to have severe COVID-19 cases and fatalities than women due to factors like lifestyle, aging, and biological differences.

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

Fat cells in the skin help start healing and form important repair cells after injury.

Asia has made significant progress in tissue engineering and regenerative medicine, but wider clinical use requires more development.

Men, especially older ones with health issues like prostate cancer, may have worse COVID-19 outcomes and could benefit from therapies targeting male hormones.

European guidelines recommend regular eye and ear exams, skin care, vitamin D supplements, and cautious use of medications for managing congenital ichthyoses.

Cancer development is like natural selection, involving mutated cells and environmental factors.

Cancer treatments often cause hair disorders, significantly affecting patients' quality of life, and better management methods are needed.

Dupilumab is being tested for many new skin, respiratory, and gastrointestinal conditions.

Hoxc genes control hair growth through Wnt signaling.

Autophagy is important for human hair growth and health.

Non-coding RNAs play key roles in the hair growth cycle of Angora rabbits.

Women with polycystic ovary syndrome tend to have a longer anogenital distance.

Chromium supplements don't improve insulin, hormone levels, or cholesterol in women with PCOS but raise testosterone levels.