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Androgenetic alopecia is the only hair loss condition with specific diagnostic criteria in trichoscopy.

This study found that trichoscopy is useful for diagnosing androgenetic alopecia and alopecia areata, and the severity of androgenetic alopecia can be assessed with this method.

This study found that trichoscopy was 73.77% concordant with histopathology in diagnosing patchy alopecia, highlighting its usefulness as a diagnostic tool for conditions like alopecia areata, lichen planus pigmentosus, and discoid lupus erythematosus.

This study determined that trichoscopy is a sensitive and specific tool that effectively aids in diagnosing alopecia in women, especially when clinical diagnosis is uncertain.

A deep learning model was developed to help diagnose trichothiodystrophy by analyzing hair patterns.

This case report describes a newly identified condition called loose anagen hair of childhood, characterized by easily pluckable hair in two young boys, with variable duration and no scalp inflammation or scarring.

This study reports that plasma rich in growth factors appeared to improve hair follicle regeneration and patient satisfaction in individuals with androgenetic alopecia, though further trials are needed.

This study found that intradermal administration of adipose-derived stem cell–conditioned medium significantly increased hair density and dermal thickness, suggesting potential regenerative effects on both hair follicles and the interfollicular scalp in patients with alopecia.

This study observed that telogen effluvium, or acute hair loss, often occurs 1 to 3 months after SARS-CoV-2 infection, earlier than classic telogen effluvium.

This study found that Caucasian female hair is denser than Asian female hair in the occipital region regardless of treatment but thinner in diameter in both the frontal and occipital regions.

This study found that trichodynia is associated with both peripheral and central sensitization, potentially linked to hair cycle abnormalities and chronic pain through proinflammatory agents.

This study reported that after 7.5 months of treatment, topical Alfatradiol significantly increased anagen hair rates in women and men with androgenetic alopecia, with minimal side effects.

This study reports an unusual finding of plucked anagen hairs with intact hair papilla and connective tissue sheath in various scalp disorders, suggesting further documentation is needed.

This article is a letter to the editor about attempts to target microinflammation in androgenetic alopecia and includes no new clinical results.

In this study, researchers found significant associations between trichoscopic features and the severity of androgenetic alopecia in Korean participants, suggesting trichoscopy as a useful tool for early detection and monitoring by identifying indicators like vellus hairs and follicular unit changes.

In this study, researchers observed that trichoscopy could reliably identify features such as anisotrichosis and signs associated with inflammation and fibrosis in female pattern hair loss, which may aid in assessing disease severity and guiding treatment decisions.

This study found that the TrichoScan method detected significant increases in hair counts and cumulative hair thickness in men after finasteride treatment, suggesting its potential for monitoring hair treatment responses.

This study developed an automated image analysis framework for diagnosing hair disorders using trichoscopic images, reporting a Random Forest classifier as having an 86.67% accuracy in distinguishing between different scalp pathologies based on quantitative image features.

In this case study, trichoscopy was found to be a valuable non-invasive tool for diagnosing dissecting cellulitis of the scalp, enabling early detection and intervention to prevent disease progression and reduce the need for invasive procedures.

This study found that trichoscopy can differentiate between dermatomyositis, systemic lupus erythematosus, and systemic sclerosis by identifying distinctive features and may help assess disease activity.

This study reported that polarized dermoscopy was better for visualizing vascular patterns, scaling, and reticular pigmentation, while nonpolarized mode better documented features like black dots and tapered hair in various hair and scalp conditions.

This review highlights the increasing use of trichoscopy, a noninvasive and well-tolerated diagnostic tool, to aid in the accurate diagnosis and management of various pediatric hair and scalp conditions, such as alopecia and other abnormalities.

This study observed that Koreans generally have lower hair density, larger diameter, and slower growth rate compared to Caucasians, providing useful baseline data for studying hair diseases and treatments.

Phototrichogram helps assess hair loss severity.

This study concluded that trichoscopy is an effective, non-invasive tool for diagnosing telogen effluvium, with significant differences in trichoscopic findings between frontal and occipital scalp regions, aiding in distinguishing it from androgenetic alopecia for early diagnosis.

Tiger tail banding and hair abnormalities are reliable indicators for diagnosing trichothiodystrophy.

This study found that both trichoscopy and folliscopy are highly accurate for diagnosing telogen effluvium, though trichoscopy is simpler and faster to perform.

UV-enhanced trichoscopy helps diagnose hair shaft disorders like pili annulati.

Trichoscopy is a helpful and quick method to diagnose hair loss without shaving.

The document concludes that using a phototrichogram with a protractor and tapeline is a reliable and noninvasive way to measure hair loss.