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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 suggests creating a secure database for indigenous knowledge and recommends that the TKDL actively fight patents that slightly alter traditional knowledge.

Lymphatic vessels help hair follicles regenerate by interacting with stem cells.

Zinc levels in body fluids can help diagnose zinc deficiency in lambs, with fecal zinc as an early indicator.

Lifestyle changes and clomiphene are first-line treatments for infertility in women with PCOS, with other options available if these fail.

Nutritional education reduces chemotherapy side effects and improves health in breast cancer patients.

Rabbits with Sarcoptes scabiei had thicker skin, cell death, and skin hardening.

Antiandrogens can treat female hormonal conditions, but environmental ones may harm reproductive health.

Exemestane is effective and safe for treating certain breast cancers, with mild side effects, but needs more research on long-term effects.

The study showed that hair follicle stem cells can maintain and organize themselves in a lab setting, keeping their ability to renew and form hair and skin.

Bone marrow and umbilical cord stem cells can help grow new hair.

Different hair care practices and conditions affect African American hair and scalp health, requiring specialized knowledge for treatment.

Arsenic exposure from contaminated water severely damages the skin, causing hair loss, pigmentation changes, irritation, and can lead to skin cancer.

The chapter explains common scalp conditions, including infections, infestations, and tumors.

Blocking Wnt signaling in young mice causes thymus shrinkage and cell loss, but recovery is possible when the block is removed.

Integrin alphavbeta6 is important for wound healing and hair growth, and blocking it may improve these processes.

Biotin is important for keeping zinc levels balanced in the skin and its lack can cause hair loss.

SKPs are similar to adult skin stem cells and could help in skin repair and hair growth.

All immigrant workers in the study had skin problems, with fungal nail infections, athlete's foot, and acne or folliculitis being most common, affecting their quality of life, yet they didn't seek medical help.

The skin's basement membrane is specially designed to support different types of connections between skin layers and hair follicles.

The NAMS 2014 recommendations guide healthcare providers on treating health issues in midlife women, emphasizing individualized care and informed decision-making.

Sensory neurons and Merkel cells remodel at different rates during normal skin maintenance.

Sensory neuron and Merkel cell changes in the skin happen independently during normal skin maintenance.

Mutant cells in hair follicles are influenced by their location and interactions with surrounding cells.

People with X-linked hypohidrotic ectodermal dysplasia have no sweat ducts and less, thinner hair.

Stem cells and their surrounding environment in hair follicles work closely together, affecting hair growth and having implications for cancer and tissue regeneration.

Human hair follicle cells can be successfully transformed into different types of cells, but not more efficiently than other adult cells.

Hair follicle-like structures can form when specific hair cells are mixed and implanted in mice.

Stem cells are key for the growth, upkeep, and repair of sebaceous glands and for understanding skin disorders.

Scientists used a special imaging technique to observe that hair follicle regeneration involves cell division and structural changes, mostly in the lower part of the follicle, and that the dermal papilla at the base is crucial for regrowth.