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The study investigates the relationship between telogen effluvium (TE) and androgenetic alopecia (AGA) in men, focusing on whether TE precedes or follows AGA. Conducted on healthy males aged 18-55 with varying stages of balding, the research used phototrichograms to track hair changes over time. Results show a linear correlation between fibre diameter and anagen duration, with thin fibres having a shorter anagen duration of 200 days. In balding scalps, even thick anagen fibres have a reduced duration of 580 days. The study concludes that anagen shortening, indicative of TE, occurs before fibre diameter reduction, which is associated with AGA. This suggests that TE is a precursor to AGA, and shedding may not always be observed, especially in men with short hair. A new model for understanding the pathogenesis of balding is proposed.

This case report discusses a rare instance of trichofolliculoma (TF), a benign skin tumour derived from hair follicle structures, in a nine-year-old boy. TF is uncommon in children and can be mistaken for other lesions like dermoid or epidermoid cysts. The boy presented with a solitary, asymptomatic nodule on the scalp, which showed specific dermoscopic features such as a central white plug of hair and dilated blood vessels. Surgical excision and histological analysis confirmed the TF diagnosis. The report emphasizes the importance of considering TF in paediatric scalp nodules and highlights the role of dermoscopy and histopathology in ensuring accurate diagnosis and treatment, thus preventing misdiagnosis and unnecessary procedures.