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Higher miR-34a levels and the A variant of the MIR-34A gene are linked to increased risk and severity of alopecia areata.

Tea, especially green tea, shows promise in cosmetics for skin and hair benefits but more research is needed for effective use.

Chronic scalp pain in trichodynia involves both body-wide and localized increased pain sensitivity.

The document concludes that diagnosing female hair loss requires careful examination, with treatments varying by condition and psychological support often necessary.

The Trichoscan system was found to be inaccurate for measuring hair growth, needing better software to be useful.

Male hormones, particularly DHT, are linked to male pattern hair loss, and treatments like finasteride can help, but they don't work for postmenopausal women's hair loss, which may have different causes.

The document says homoeopathic treatments are good for hair regrowth in alopecia areata but doesn't give proof.

The enzyme that changes testosterone to a stronger form is mostly found in the part of the hair follicle called the dermal papilla.

Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

The document concludes that oral finasteride and topical minoxidil are effective for genetic hair loss, while other treatments for different types of hair loss show promise but need more research.

Healthy Han Chinese have lower hair density than whites and Africans, and transplanting 300 hair units can nearly restore normal hair density.

Intradermal testing can better detect corticosteroid allergies than patch testing.

Two drugs, finasteride and minoxidil, are approved for hair loss treatment, but new therapies are being developed.

Consider benefits and risks of new alopecia treatments for safety.

PRP treatment may promote hair growth and improve hair density in women with AGA, but more research is needed.

Androgens play a key role in hair growth and disorders like baldness and excessive hairiness.

Plant-based chemicals may help hair growth and prevent hair loss but need more research to compete with current treatments.

Hair transplant surgery reduces scalp sensitivity by almost 40%, and smokers have less scalp sensitivity than non-smokers. The time since surgery doesn't significantly affect this.

Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.

Parietal scalp area has lower hair density and smaller hair diameter in women with hair loss.

The back of the scalp has more nerve fibers than the front, which may explain why some people feel more sensitivity there.

Androgens can cause hair growth in some areas and hair loss on the scalp.

Androgens can cause hair growth in some areas but hair loss on the scalp.

Women with female pattern hair loss have higher levels of certain androgens, suggesting increased androgen exposure to hair follicles.

Androgens can both stimulate and cause hair loss, and understanding their effects is key to treating hair disorders.

Men with hair loss experience lower quality of life, worsened by factors like age, severity, and treatment history.

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

Hair follicle biology advancements may lead to better hair growth disorder treatments.

Hair growth is influenced by hormones and goes through different phases; androgens can both promote and inhibit hair growth depending on the body area.