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Pressure-induced hair loss is rare, often reversible, and early diagnosis is crucial to prevent complications.

Wait 4-5 weeks after drug use before hair testing and cut hair into three segments to confirm single drug exposure.

THCCOOH levels in hair decrease from root to tip and don't match well with self-reported cannabis use.

A woman developed white patches on her skin and curly hair after hepatitis C treatment, likely due to the medication interferon alpha.

A 16-year-old boy had a rare case of Becker's nevus on his face and mouth.

White hair follicles in vitiligo have fewer and less functional melanocytes.

Segmental Vitiligo is a stable, early-onset form of vitiligo that responds well to early treatment and is ideal for repigmentation studies.

Segmental hair analysis can track testosterone over time but needs adjustments for sex, hair color, and washing frequency.

The study suggests a link between varicella-zoster virus and segmental vitiligo, with evidence of the virus disrupting skin pigment cells.

Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.

Segmental vitiligo affects hair follicle melanocytes, causing small, uniform depigmented spots.

Two patients had a rare combination of red skin spots and white scaly skin lesions not on the genitals.

Drugs localize differently in hair strands based on their properties.

Researchers improved a method to more accurately estimate when and how long a drug was taken using hair analysis.

The Scalp Coverage Scoring method reliably measures hair density from images.

The combination treatment showed some improvement but wasn't significantly better than using betamethasone valerate alone.

Upadacitinib and narrowband UVB effectively treated a child's vitiligo and alopecia areata.

Swiss Holstein cattle with curly, short hair carry genes from the Simmental breed.

Transplantation is effective for stable leucoderma but not for progressive, widespread vitiligo vulgaris.

Single hair grafting is effective for treating small, localized patches of vitiligo.

High androgen levels and genetic factors likely cause Becker's nevus and related symptoms.

Chemotherapy can cause rapid, extensive hair loss, with patterns varying between individuals.

The study found that the most common repigmentation pattern in children with vitiligo is a combination of patterns, with a new medium spotted pattern identified.

A patient with Ivemark syndrome developed mixed type vitiligo after a hepatitis C infection, showing different treatment responses and immune cell involvement in the skin.

Muskox hair growth rates vary widely, so a single growth rate can't be used for all populations.

Popliteal Artery Entrapment Syndrome (PAES) is a rare but possible cause of leg pain during walking, even in untrained women.

Vitiligo patients have higher hydrogen peroxide levels and lower E-cadherin, affecting skin cell adhesion and pigmentation.

Platelet-rich plasma may improve vitiligo treatment when used with phototherapy.

Surgical methods like suction blister grafting and split-thickness skin grafting are highly successful for vitiligo repigmentation, but choosing the right patients is crucial for success.

Follicular unit transplant successfully repigmented vitiligo patch on upper lip.