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This study found that patients with alopecia areata and androgenic alopecia had significantly increased mast cell infiltration, which was influenced by age and disease severity, especially in alopecia areata.

This study observed that patients with alopecia areata and androgenic alopecia have significantly more perifollicular and perivascular mast cells compared to healthy individuals, particularly in those over 40 and with greater disease severity.

Early stage bald spots are linked to skin inflammation and damage to the upper part of the hair follicle.

In this study, researchers investigated the immunohistopathological characteristics of the skin in individuals during the acute phase of chikungunya infection, revealing CHIKV antigens and inflammatory infiltrates in various skin components and highlighting the role of cytokines/chemokines in the disease's skin manifestations.

This study observed that specific dermoscopic features, such as altered pigmentary network and yeast invasion of hair follicles, along with certain histopathological features, assist in diagnosing pityriasis versicolor.