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Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.

Dermatoscopy is useful for identifying different hair and scalp conditions and can reduce the need for biopsies.

Trichoscopy helps monitor changes and detect issues after hair transplants.

Hair and wool have complex microscopic structures with microfibrils and varying cystine content.

Dermoscopy helps diagnose different scalp conditions by showing unique signs for each disorder.

A handheld dermatoscope helps diagnose different types of hair loss effectively.

The document concludes that new methods improve the accuracy of diagnosing scalp alopecia and challenges the old way of classifying it.

A woman and her daughter had thallium poisoning from a herbal drink and rodenticide, causing hair loss and other symptoms.

Corneodesmosin is essential for skin and hair health, and its dysfunction can lead to skin and hair disorders.

AIDS may cause changes in the scalp that increase infection risk and hair loss.

6.1% of patients seeking PRP for hair loss had undiagnosed cicatricial alopecia, which PRP cannot treat.

A girl had two rare hair conditions that helped understand their overlap.

Genetic testing is crucial for diagnosing rare hair loss disorders.

The conclusion is that genetic differences affect how the cochlea heals after hair cell loss, which may challenge the creation of hearing loss treatments.

EVG staining helps tell apart follicular scars from follicular streamers, aiding in diagnosing different types of hair loss.

Trichoscopy is useful for quickly diagnosing different types of hair loss without needing biopsies.

Different patterns on the scalp help diagnose types of hair loss without needing a biopsy.

The study found that white hair in vitiligo has specific patterns and structures, which vary with the stage of the disease and may be similar to another hair condition.

Keratin K80 is an ancient protein found in various tissues, important for cell structure and tissue differentiation.

Lichen simplex chronicus on the scalp can be diagnosed by specific hair and skin signs and treated with corticosteroids and therapy.

Vigorous rubbing of herbal powder on the scalp caused hair damage and loss.

Hair camouflage methods like wigs and extensions can help Black women with alopecia feel better but may also damage hair if not used carefully.

Rat vibrissae structure relates to their sensory function.

COVID-19 can cause hair loss starting as early as 18 days after infection.

Oral valganciclovir improved a patient's skin condition caused by immunosuppression.

Sensitive skin often causes discomfort, affects many people, especially women and older adults, and should be managed with careful product selection.

The document reviews key historical figures and discoveries in dermatology.

Yellow dots and short vellus hairs are the most common signs of Alopecia Areata (AA), and trichoscopy can help diagnose AA and track treatment progress.

Exclamation-mark hairs and yellow dots indicate alopecia areata, while follicular ostia loss and white scarring indicate lichen planopilaris and discoid lupus erythematosus.

Large-scale reconstructions enhance understanding of vibrissal sensory mapping in the brain.