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Different ethnic hair types have unique nanoscopic and molecular features despite having the same basic keratin structure.

Steroid hormones can be preserved in ancient hair, revealing insights into past health and fertility.

Testing hair roots with a special dye is a simple, non-invasive way to check disease progress in pemphigus vulgaris patients.

Reliable, non-invasive tools are needed for better vitiligo diagnosis.

Beau's lines on fingernails might indicate past severe COVID-19 and risk of reinfection.

An adult had a rare scalp infection in the forehead area, treated successfully with itraconazole.

A new imaging method accurately measures burn severity by assessing collagen damage.

The conclusion is that recognizing hair growth cycles can improve the precision of dietary and health assessments from hair analysis.

Tattoo markers help place ear prostheses easily and improve acceptance.

Trichoscopy helps quickly identify autoimmune diseases on the scalp but should be used with other standard tests.

Sodium and potassium levels in Egyptian scalp hair differ by sex and can aid in legal cases.

The study found that the cause of alopecia areata can be identified through tissue analysis, and vertical sections are enough for diagnosis.

Alopecic hair has more irregular structures and chemical changes than normal hair, reducing its strength.

A new method accurately measures hair lipids, revealing individual differences.

People with decreased kidney function have higher levels of ethyl glucuronide in their hair.

Trichothiodystrophy hair is structurally abnormal with protein and organization issues.

The document's conclusion cannot be determined.

Dermoscopy helps distinguish between scarring and non-scarring hair loss and accurately diagnoses hair and scalp conditions without needing hair plucking.

Nails are a useful alternative to hair for analyzing long-term substance exposure.

The method accurately detects and removes hair from skin images to improve melanoma diagnosis.

Trichoscopy is important for planning treatment of hair loss after burns.

Connective tissue nevi have distinct features, and reflectance confocal microscopy is useful for early diagnosis.

Special and immunohistochemical stains are not routinely needed for diagnosing hair disorders.

Reconstructing lower face gunshot injuries with a fibula and scalp flap is effective and gives good long-term results.

Hair microscopy is a simple and cost-effective method to help diagnose systemic diseases in children.

Computer-aided imaging system accurately measures baldness in Chinese women with hair loss.

The method effectively images and correlates elements and metabolites in tissue samples at a micron scale.

The document concludes that using the right diagnostic methods and careful sample handling is crucial for accurately diagnosing horse skin diseases.

Reflectance confocal microscopy can help tell apart scarring from non-scarring hair loss.

Diagnosing hair loss disorders needs clinical, dermoscopic, and histological differences, and checking menstrual cycle, weight changes, drug therapy, and nail changes.