Trichoscopic and Clinical Characteristics of Temporal Triangular Alopecia: A Multicenter Study

The document presents findings from a multicenter study on Temporal Triangular Alopecia (TTA), which included 31 patients from Spain. The study found a slight female predominance in TTA cases, with the left side of the scalp being the most commonly affected. TTA was typically diagnosed within the first two years of life, with a triangular shape being the most prevalent form. Trichoscopy, used in 61.3% of cases, revealed white hairs, a diversity of hair diameters, and vellus hair as common features. No effective treatments were identified, except for surgery. The study also reviewed trichoscopic features of Folliculitis Decalvans (FD) in 58 patients, finding tufted hairs, perifollicular erythema, and follicular hyperkeratosis as hallmark features. The presence of pustules was associated with disease severity and activity. Lastly, a case report described the use of automated microneedling combined with platelet-rich plasma as a potential treatment for cicatricial alopecia, traction alopecia, and recalcitrant alopecia areata, showing marked clinical improvement in three cases.