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All hair removal methods irritate underarm skin and cause dryness, with shaving being less irritating but more drying than plucking or waxing.

A 15-year-old boy's smelly, yellow armpit hair improved with clindamycin treatment.

The document concludes that accurate diagnosis of hair loss in children is crucial due to limited treatment options and the condition's psychological impact.

The document explains hair growth and shedding, factors affecting it, and methods to evaluate hair loss, emphasizing the importance of skin biopsy for diagnosis.

Most hair loss can be diagnosed with patient history and physical exam, and a few common types make up most cases.

Detailed patient history and physical exams are crucial for diagnosing hair loss.

Androgens like testosterone affect hair growth and oil production differently across body parts and individuals.

The document explains different hair loss types and treatments, emphasizing diagnosis through examination and tests, and specific treatments for each condition.

Testosterone affects skin by increasing oil production and influences hair growth.

Long-term testosterone therapy can cause hormone suppression, affect prostate and heart health, and alter physical characteristics, but does not increase prostate cancer risk and needs more research for full risk assessment.

Androgens can both increase and decrease hair growth in different parts of the body.

Combining liposuction with laser ablation effectively reduces underarm odor with minimal side effects.

Hair testing is effective for detecting long-term drug use.

To diagnose hair loss, use a systematic approach including history, exams, and tests.

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.

Gender affects hair and scalp characteristics, with differences in hormone responses, graying patterns, and trace metals.

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.

Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.

High levels of testosterone and 5α-DHT can lead to cell death in cells important for hair growth.

Testosterone and dihydrotestosterone affect hair growth, and new techniques like the folliculogram help study it, but fully understanding hair growth is still complex.

Black henna tattoos can cause severe allergies to hair and textile dyes, and there's a need for greater public awareness and regulation.

The document concludes that targeting 5α-reductase, the androgen receptor, and hair growth genes, along with using compounds with anti-androgenic properties, could lead to more effective hair loss treatments.

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

Genetics and hormones cause hair loss; finasteride treats it safely.

Testosterone therapy in transgender men has both desired effects like increased muscle mass and potential health risks such as higher cardiovascular risk.

Hormones and their receptors, especially androgens, play a key role in hair growth and disorders like baldness.

Male hormones cause different growth in identical human hair follicles due to their unique epigenetic characteristics.

Changes in skin bacteria can affect hair loss and new treatments targeting these bacteria may prevent balding without sexual side effects.

A man with severe hair loss regrew hair after hormone treatment.

Testosterone, DHT, and estradiol significantly affect hair cell growth.