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Certain sex hormones and antiandrogens can either slow down or speed up the growth of human hair follicle cells depending on their concentration.

A woman with Parkinson's disease experienced hair loss from the Parkinson's medication pramipexole, which improved after stopping the drug.

The study found key genes and pathways involved in cashmere goat hair growth stages.

Metformin helps improve menstrual irregularities and some hormone levels in PCOS patients, but not symptoms like excess hair, acne, or hair loss.

The gene Ascl4 is not necessary for the development of hair, teeth, or mammary glands.

Resveratrol improved hormone levels, menstrual cycles, hair loss, and ovarian function in PCOS patients.

PCOS is a complex condition that can lead to serious health issues, but early diagnosis and treatment can reduce these risks.

Skin stem cells in hair follicles are important for touch sensation.

Hair follicle stem cells are crucial for touch sensation and proper nerve structure in mice.

Thyroid hormones affect skin texture, hair and nail growth, and can cause skin diseases related to thyroid problems.

The conclusion is that understanding the complex relationship between allergies, autoimmunity, and psychological factors is key to treating skin disorders with itching.

The chapter explains the causes of excessive hair growth and masculinization in women and how to measure hormone levels related to these conditions.

Different hormones affect hair growth and conditions, with some causing hair loss and others promoting it.

Alopecia areata involves immune response and gene changes affecting hair loss.

Azathioprine can cause severe blood issues and hair loss, needing careful monitoring and possible discontinuation.

Activins and follistatins, part of the TGFβ family, are crucial for hair follicle development and skin health, affecting growth, repair, and the hair cycle.

Special particles from skin cells can promote hair growth by activating a specific growth signal.

Pregnancy can cause skin darkening, varicose veins, more sweating, hair growth, hair loss after birth, nail changes, and gum inflammation.

Prolactin affects hair growth and skin conditions, and could be a target for new skin disease treatments.

The scalp's microorganisms significantly affect hair health and disease.

There are two ways to start hair growth: one needs Stat3 and the other does not, but both need PI3K activation.

Bone-marrow and epidermal stem cells help heal wounds differently, with bone-marrow cells aiding in blood vessel formation and epidermal cells in hair growth.

Hair loss in men and women is linked to high stress hormone levels and other hormonal imbalances, suggesting treatments should be customized to each person's hormones.

Key genes crucial for sheep hair follicle development were identified, aiding fine wool breeding and human hair loss research.

Effective scalp reconstruction requires a wide range of surgical skills and an understanding of hair biology.

Deleting the PTEN gene in mice causes nerve cells to grow larger and heal better after injury, but may cause overgrowth and hair loss in older mice.

Activating a bitter taste receptor in hair follicles can stop hair growth by increasing a specific growth factor.

Skin cells produce and activate vitamin D, which regulates skin functions and supports hair growth.

Hair follicles are normally protected from the immune system, but when this protection fails, it can cause hair loss in alopecia areata.

The Hedgehog signaling pathway is important for skin and hair growth and can lead to cancer if it doesn't work right.