Ciccarese Giulia, Drago Francesco
Department of Dermatology, IRCCS AOU San Martino, Genoa, Italy.
Dermatol Online J. 2017 Aug 15;23(8):13030/qt2d50q1tq.
Pityriasis rosea (PR) may have atypical presentations as regards morphology and distribution of the lesions. Recently, several forms of PR considered atypical for the course of the disease have been described. Differently from the typical PR that resolves within 2-12 weeks, relapsing and persistent PR forms (lasting longer than 12 weeks) have been described in adults and children. Lesions of the oral mucosa in PR may be more common than as reported in the literature. Formerly, the occurrence of oral lesions in PR has been considered more frequent in dark-skinned patients compared to light-skinned patients. However, in 12 Caucasian adult patients with persistent PR that have been recently described, oral lesions were very common (75% of cases). Another study on the clinical features and virological parameters of 31 Caucasian children with PR showed that painless oropharyngeal lesions were present in 35% of them, a rate much higher than those reported in adult dark-skinned (9%) and Caucasian patients (16%) with typical PR.
玫瑰糠疹（PR）在皮损的形态和分布方面可能有非典型表现。最近，已经描述了几种病程被认为是非典型的PR形式。与在2 - 12周内消退的典型PR不同，成人和儿童中都有复发型和持续型PR（持续超过12周）的描述。PR中口腔黏膜损害可能比文献报道的更为常见。以前，与浅肤色患者相比，PR中口腔损害在深肤色患者中被认为更为常见。然而，最近描述的12例患有持续性PR的白种成人患者中，口腔损害非常常见（75%的病例）。另一项针对31例患有PR的白种儿童的临床特征和病毒学参数的研究表明，35%的患儿存在无痛性口咽损害，这一比例远高于报道的患有典型PR的成年深肤色患者（9%）和白种患者（16%）。
