Validation and Clinical Relevance of a Novel Scalp Coverage Scoring Method

The study introduced and validated a novel scalp coverage scoring (SCS) method designed to measure the dynamics of hair growth and loss in male subjects with androgenetic alopecia (AGA). The method was tested on 38 male subjects and showed a strong correlation between real-time SCS and SCS on global photographs, with minimal inter- and intra-observer variation. The SCS was negatively correlated with the severity of male pattern baldness as per the modified Norwood–Hamilton scale. Additionally, the SCS correlated with the percentage of thick anagen hair and the density of thin hair. Over time, changes documented on global photographs were consistent with expert ratings, demonstrating the method's reliability. The SCS method was highlighted as a non-invasive, quantitative, and reproducible technique that could be easily applied in clinical settings to monitor scalp hair dynamics.