Seborrheic Dermatitis: Three Novel Trichoscopic Signs and Its Correlation to Malassezia sp. Colonization

In a 2019 study involving 16 patients with Seborrheic Dermatitis (SD), researchers discovered three new trichoscopic signs: the "dandelion" vascular conglomerate, the "cherry blossom" vascular pattern, and intrafollicular oily material. The "dandelion" sign, found in 25% of patients, was the only one associated with the level of Malassezia sp. colonization, indicating its potential as a marker for fungal presence and the need for antifungal treatment. The "cherry blossom" pattern and intrafollicular oily material were observed in 6.25% and 31.25% of patients, respectively. The study highlighted the "dandelion" vascular conglomerate as a significant indicator of SD related to Malassezia sp.