A Segmental Approach to Scoring Hair Density from Global Images: Introducing the Scalp Coverage Scoring Method for Clinical Trials and Practice

Combining scalp photos with hair density and caliber measurements gives a more accurate assessment of hair loss.

This review discusses pharmacological treatments for pattern hair loss, focusing on minoxidil and finasteride's safety and efficacy, and reports no new clinical results.

Scalp photography helps patients feel less anxious about hair loss, agree more with doctors on severity, and stay motivated for treatment.

This study found that hair mass index can effectively link hair productivity with clinical scalp coverage perception, suggesting its potential usefulness in diagnosing hair loss patterns and responses to treatment.

This study reported that combined oral finasteride and topical 5% minoxidil treatment in men with male-pattern hair loss improved hair growth by initiating anagen in pre-existing but deficient follicles, yet the growth rates remained unchanged and did not normalize hair productivity.

In this study, finasteride treatment for two years did not significantly reverse miniaturized hair follicles in men with male pattern hair loss, challenging the "reversal hypothesis" as 79 out of 113 miniaturized hairs remained unchanged.

This study found that male pattern hair loss worsened significantly after stopping finasteride, revealing a "rebound effect" where terminal hair transformed into miniaturized hair over 30 months off the drug.

This study found a strong correlation between the Sinclair Scale and cumulative hair thickness density, allowing the estimation of the Sinclair Scale from trichoscopy-derived statistics.

This study found that, in female patients with idiopathic telogen effluvium, a supplement containing zinc, biotin, and other nutrients significantly improved hair loss and quality over 180 days, whereas another supplement with different ingredients had less consistent effects.

This guideline review by the European Dermatology Forum evaluates current treatments for androgenetic alopecia but reports no new research findings, aiming to assist dermatologists in selecting safe and effective therapies.

This analysis concluded that hair regrowth in male and female pattern hair loss treatments did not involve converting vellus hairs into terminal hairs, suggesting a reactivation of dormant non-vellus follicles instead.

In this study, a computer-aided imaging system accurately measured the width of balding areas in female pattern hair loss, correlating strongly with clinical staging severity.

In this study, untreated men with androgenetic alopecia continued to experience progressive hair loss over a 5-year period, with a significant decline in hair density observed in the placebo group.

This study found that US and EU experts provided similar ratings of hair loss changes from global photographs in male subjects with androgenetic alopecia, supporting the use of standardized photographic evaluations.

This study found that finasteride (1 mg/day) appeared to reverse the shortening of the hair cycle in androgen sensitive sites but did not convert miniaturized hair into terminal hair.

This study found that the prevalence of androgenetic alopecia increases with age among both men and women in Maryborough, Australia, with 57% of women and 73.5% of men aged 80 and over affected.

This study found that the scalp coverage scoring (SCS) method is a non-invasive and reproducible technique that effectively measures hair growth and loss dynamics in male subjects with androgenetic alopecia.

This study found that the parietal/occipital hair density ratio decreases significantly only when baldness is visibly present, making it no better than the Hamilton/Norwood scale for assessing baldness severity.

In this study, the prevalence of androgenetic alopecia among Korean men and women was found to be lower than in caucasians, with Korean men showing more frontal hairline preservation and a higher incidence of 'female pattern' hair thinning.

This study found that finasteride increases anagen hair growth in men with androgenetic alopecia.

In male pattern hair loss, this study found that finasteride 1 mg daily significantly slowed hair loss and increased hair growth over two years compared to placebo.

Young men with male pattern baldness lose hair density over time without treatment.

In this study, topical 2% minoxidil did not significantly improve hair density measures in men with male pattern baldness, although there was no deterioration, suggesting a potential prophylactic effect.

This study found that frontal and frontoparietal hair recession is relatively common in women, especially after menopause, and may not indicate abnormal androgen metabolism absent other virilization signs.

This article presents a classification system for stages of female-pattern androgenetic alopecia to aid early diagnosis and mentions existing systems for rare male-pattern cases, but reports no new clinical results.