Paulo Morais

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Trichotillomania (TTM) is an impulse-control disorder, in which patients chronically pull hair from the scalp and/or other sites. We herein report a 8-year-old male patient who developed TTM in the classical tonsure pattern ("Friar Tuck" sign). The diagnosis was confirmed by trichoscopy, which showed decreased hair density, broken hairs with different shaft(More)
Pachyonychia congenita (PC) is a rare genodermatosis caused by mutations in any of the four genes KRT6A, KRT6B, KRT16, or KRT17, which can lead to dystrophic, thickened nails and focal palmoplantar keratoderma, among other manifestations. Although classically subdivided into two major variants, PC-1 (Jadassohn-Lewandowski syndrome) and PC-2 (Jackson-Lawler(More)
Trichoscopy corresponds to scalp and hair dermoscopy and has been increasingly used as an aid in the diagnosis, follow-up, and prognosis of hair disorders. Herein, we report selected cases harbouring scalp or hair diseases, in whom trichoscopy proved to be a valuable tool in their management. A review of the recent literature on this hot topic was performed(More)
Segmental neurofibromatosis is a rare disorder characterized by features of neurofibromatosis type 1 circumscribed to a particular body segment. This entity is considered to be the result of a somatic mosaicism and is still under-diagnosed. We report a case of segmental neurofibromatosis and give a brief and up-to-date overview of the disease.
In human genetic identification the selection of highly polymorphic markers it is very important in order to obtain a high discrimination power even when the number of loci is limited. STR typing continues to be the most robust and reliable method for samples with small amounts of purified and non-degraded DNA. Nonetheless, STR typing has some limitations,(More)
A case study A previously healthy woman, aged 37 years, presented with a 4-week history of pruritic periungual rash and subungual pain. Physical examination revealed scaly, fissured, erythematous plaques around her fingernails (Figure 1). Underneath the acrylic artificial nails that she had been wearing for 6 weeks, onycholysis and nail bed hyperkeratosis(More)
Sweet's syndrome is the most frequent category among the neutrophilic dermatosis and is diagnosed by clearly defined criteria. Vaccines are included as potential triggers of this syndrome. Nevertheless, there are few reports unveiling such association. Herein, we describe the case of a patient who developed Sweet's syndrome after pneumococcal vaccination.(More)
Congenital atrichia (CA) is a rare form of irreversible alopecia with an autosomal recessive mode of inheritance, usually associated with a mutation in the human hairless (HR) gene located at chromosome 8. Papular lesions may develop as an additional phenotypic feature. Herein we describe a case of CA supported by trichoscopy, histology and genetic(More)