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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.

The document concludes that early diagnosis and treatment are crucial for children with hair loss to prevent permanent damage, although not all conditions can be effectively treated.

Progesterone and related compounds may help control seizures linked to the menstrual cycle but have limitations that need addressing.

Immune cells help regulate hair growth, and better understanding this can improve hair loss treatments.

The experiment showed that human skin grown in the lab started to form early hair structures when special cell clusters were added.

ΔNp63α stops TAp73β from working in skin cancer by blocking its access to specific genes, not by directly interacting with it.

MEL-A from soybean oil can boost fibroblast and papilla cells, potentially aiding hair growth.

3D-printed mesoporous scaffolds show promise for personalized drug delivery with controlled release.

Nanomaterials in biomedicine can improve treatments but may have risks like toxicity, needing more safety research.

The document concludes that understanding the anatomical changes of the ageing face is important for effective rejuvenation treatments.

Genetic marker rs12558842 strongly linked to male hair loss.

Different markers are found in stem cells of the scalp's hair follicle bulge and the surrounding skin.

The normal human prostate does not significantly affect blood DHT levels.

Women generally handle heart enlargement better than men, but it's riskier for them if it occurs; hormones like estrogen offer some protection.

iNKT cells can help prevent and treat alopecia areata by promoting hair regrowth.

The research found that MRI and certain hormone levels can help tell apart ovarian tumors from hyperthecosis in postmenopausal women, but tissue analysis is still needed for a definite diagnosis.

The enzyme 5α-reductase is key in causing psychotic-like effects from sleep deprivation.

Male faces age with more wrinkles and hair loss, influenced by both body changes and environmental factors.

Researchers created a mouse model for Cushing's syndrome to study glucocorticoid excess and potential treatments.

Higher caspase-1 levels found in balding scalps; reducing it may help treat hair loss.

The document says that understanding the causes of PCOS is important for treatment, especially in distinguishing the syndrome from just having cystic ovaries, and that losing weight is key for obese women with PCOS.

A pulsed electrical field safely and effectively increased hair growth.

Rapamycin treatment helps with mitochondrial disease by reducing PKC levels.

Microneedle made of iron oxide and PVA helps hair regrowth in alopecia treatment.

Chitosan-coated dutasteride nanocapsules improve hair treatment, and physical stimulation boosts effectiveness.

Post-finasteride syndrome causes lasting sexual, neurological, and physical side effects in some people after taking finasteride.

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

The document concludes that proper diagnosis and combined treatments are key for hirsutism management, and weight loss may help overweight patients.

A girl initially thought to have a psychiatric disorder was later found to have a lupus-related condition, which improved with proper treatment.

A teenage girl with high androgen levels and PCOS developed a rare liver tumor, suggesting a possible link between high androgens and the tumor's growth.