Daniel Fernandes Melo

Folliculitis decalvans: the use of dermatoscopy as an auxiliary tool in clinical diagnosis

Folliculitis decalvans is an inflammatory presentation of cicatrizing alopecia characterized by inflammatory perifollicular papules and pustules. It generally occurs in adult males, predominantly involving the vertex and occipital areas of the scalp. The use of dermatoscopy in hair and scalp diseases improves diagnostic accuracy. Some trichoscopic findings, such as follicular tufts, perifollicular erythema, crusts and pustules, can be observed in folliculitis decalvans. More research on the pathogenesis and treatment options of this disfiguring disease is required for improving patient management.

Líquen plano hipertrófico disseminado: relevante resposta à acitretina

Hyperthrofic lichen planus is considered a variant of lichen planus with marked epidermal hyperplasia in response to persistent itch. It is clinically, characterized by symmetric hyperkeratotic plaques, of purplish-grey color, often located in the pretibial region. Intense pruritus, refractoriness to conventional treatments and the possibility of association of the long-term injuries with squamous cell carcinoma requires an effective treatment. The first-line treatment is corticosteroids which can be applied either topically or systemically. Other therapeutic modalities proposed are: NB-UVB phototherapy or PUVA, immunosuppressive drugs and systemic retinoids, notably acitretin. We report a case with exuberant clinical presentation of hyperthrofic lichen planus with excellent response to acitretin after nine months of treatment

Yellow dots in trichoscopy: relevance, clinical significance and peculiarities

Yellow dots are follicular ostium filled with keratin and/or sebum. Initially, they were exclusively associated with alopecia areata. Currently they have also been described in androgenetic alopecia, chronic cutaneous (discoid) lupus erythematosus, and dissecting cellulitis. Due to the growing importance of trichoscopy and its findings in the evaluation of the scalp, this article describes the main diseases in which yellow dots are a common trichoscopic finding, highlighting its characteristics in each dermatosis.

Progressive symmetrical erythrokeratodermia - Case report*

Progressive symmetrical erythrokeratodermia is a rare autosomal dominant genodermatosis with variable penetrance described by Darier in 1911. It is characterized by erythematous and keratotic plaques, sharply defined and symmetrically distributed along the extremities, buttocks and, more rarely, on the face. We report a case of a 55-year-old patient with lesions on the dorsum of the hands, interphalangeal pads, wrists, groin and back feet. This case demonstrates a rare and late diagnosis, clinical profusion and presence of familiar involvement.