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The conclusion is that understanding how feathers and hairs pattern can help in developing hair regeneration treatments.

Changes in testosterone and estrogen receptor genes can affect how men age, influencing body fat, hair patterns, and possibly leading to skin disorders.

The document concludes that successful hair restoration surgery should consider facial proportions and balance, and requires surgical skill, artistic judgment, and realistic goals for a natural look.

Women with excessive male-pattern hair growth should get a full hormone check-up to find and treat any underlying issues, considering both medical and emotional aspects.

Using both vertical and transverse sections gives a better diagnosis of alopecia than using one method alone.

Hair loss severity relates to increased miniaturization in female pattern hair loss.

After menopause, some women lose scalp hair and gain facial hair, with patterns suggesting different underlying causes.

Some drugs can cause reversible hair loss, but certain chemotherapy drugs may lead to permanent hair loss; drugs can also change hair color and texture.

Female pattern hair loss has unclear causes, possibly involving genetics, hormones, and environment, and needs better treatments.

Baldness in men with prostate cancer is linked to higher levels of certain sex hormones, but chest hair density is not.

Scanning electron microscopy revealed four distinct hair root shapes in alopecia areata, suggesting a less invasive diagnostic method.

Use "female pattern hair loss" term, assess androgen excess, treat with minoxidil and other medications if needed.

Minoxidil effectively treats female pattern hair loss.

Topical minoxidil helps treat female pattern hair loss, but more research needed for other treatments.

Male and female hair loss have different genetic causes.

Aging mice have slower hair regeneration due to changes in signal balance, but the environment, not stem cell loss, controls this, suggesting treatments could focus on environmental factors.

Certain treatments can speed up local hair growth in mice but don't change the overall hair growth pattern.

Phototrichogram and hair diameter measurements are effective, noninvasive ways to assess hair growth and detect early hair loss, with the most common pattern being reduced hair density.

Hair restoration surgery can effectively increase pubic hair density, with patient satisfaction and natural results largely depending on the chosen hair pattern and graft design.

Hormone therapy affects hair growth in transgender individuals, with testosterone potentially causing hair loss in trans men and estrogen reducing facial/body hair in trans women; treatment options vary.

Up to 50% of scalp hair can be lost before it appears thin, and treatment is only needed for hair loss caused by diseases or deficiencies.

Researchers found 71 genetic regions linked to male pattern baldness, which account for 38% of its genetic risk.

Male pattern baldness is often genetic and linked to a hormone, with treatments like finasteride and minoxidil being effective for some men.

Early hair loss may increase the risk of prostate cancer, especially in African American men and those with frontal baldness.

Hair changes are common in AIDS patients and can add to their financial and emotional stress.

Vertex pattern hair loss linked to higher prostate cancer risk.

Hair loss treatments work better with lifestyle changes.

Gender-affirming hormone therapy changes hair growth in transgender people, with feminizing therapy reducing hair and masculinizing therapy increasing it, but sometimes additional treatment is needed.

Hair microscopy is useful for diagnosing certain hair loss conditions but has limitations and must be interpreted carefully.

Hair transplant surgery is a good cosmetic solution for people with little or no pubic hair, especially to boost their self-esteem.