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Human hair varies in structure based on curl type, with high curl hair showing the most differences.

Hair analysis can be unreliable due to external contamination and varying drug concentrations.

Children's hair diseases include compulsive hair-pulling, easily plucked hair, scalp fungal infections, and head lice, each requiring specific diagnosis and treatment.

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

The document concludes that measuring hair density, shaft diameter, growth rate, and anagen:telogen ratio is important for assessing hair growth treatments.

The new mild shampoo helped prevent hair loss in the subjects.

A new method accurately measures steroid hormones in a few hair strands and could help study chronic stress and hair loss.

Clippers are the best tool for collecting dog hair for chemical tests, being fast and stress-free for the dog.

Hair cortisol can be used to measure long-term stress exposure.

The study found that hair fragility in Pili annulati may be caused by cavities and damage within the hair shafts.

Dermatoscopy can quickly help distinguish between alopecia areata and tinea capitis in children.

Hair care products often cause contact dermatitis, especially in women and hairdressers.

A new method for studying hair follicles is easier and more precise, useful for hair loss and cancer treatment research.

The conclusion is that normal scalp hair counts for Taiwanese people were established, showing age-related differences but not sex or scalp location differences.

Trichoscopy of the beard is useful for diagnosing frontal fibrosing alopecia in men.

Early recognition of loose anagen hair syndrome is important to prevent misdiagnosis and unnecessary treatments.

Hair changes and a high occipital hairline may help diagnose Trichorhinophalangeal Syndrome.

The method is effective for evaluating hair loss treatments quickly and affordably.

Trichoscopy is essential for accurately diagnosing and differentiating types of hair loss.

The procedure reliably measures cortisol in rhesus macaque hair.

A dark-haired Chinese girl had hair that looked banded under certain light but was normal under a microscope.

The new "whisker follicle microinjection assay" can test how different biomolecules affect hair growth and color.

Hair loss greatly affects quality of life, and dermatologists are crucial for proper diagnosis and treatment.

Hair damage shows as fragility, dullness, and discoloration, varies by ethnicity, and is worsened by cosmetic procedures and diseases.

The new method is 1000 times more sensitive for measuring hair growth.

Hair cortisol measurement is a promising, non-invasive tool for monitoring cortisol exposure over time.

Chemical dyes damage hair's internal structure more than perming, as shown by a special imaging technique.

Measuring 17-hydroxyprogesterone in hair can help monitor androgen levels in people with congenital adrenal hyperplasia.

The technique helps measure how hair styling ingredients affect hair's stiffness and flexibility.

The document concludes that accurate diagnosis and understanding the type of hair disorder are crucial for treating hair loss in children.