Pityriasis amiantacea and Psoriasis

Hansted, B; Lindskov, R

doi:10.1159/000249897

Cited by 15 publications

(15 citation statements)

References 5 publications

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“…Bugüne kadar psöriyazis, seboreik dermatit, liken planus, liken simpleks kronikus, Darier hastalığı, süperfisiyel fungal veya piyojenik enfeksiyonları da içeren çeşitli hastalıklarla birlikteliği bildirilmiştir (2,(4)(5)(6)(7)(8)(9)(10). Etyolojiyi araştırmaya yönelik çalışmalar kısıtlı sayıda bulunmaktadır ve çoğunlukla mikrobiyolojik ve histopatolojik incelemeleri içermemektedir.…”

Section: Discussionunclassified

“…Sebebi bilinmemekle birlikte, çeşitli inflamatuar durumlara karşı saçlı derinin bir reaksiyonu olduğu düşünülmektedir (3). Bugüne kadar psöriyazis, seboreik dermatit, liken planus, liken simpleks kronikus, Darier hastalığı, süperfisiyel fungal veya piyojenik enfeksiyonlarile birlikteliği bildirilmiştir (2,(4)(5)(6)(7)(8)(9)(10). Hastalığa sebep olan faktörlerin bilinmesi, terapötik yaklaşımı belirlemek açısından önemlidir.…”

Section: Introductionunclassified

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A Research on Clinic and Ethiopathological Factors in Pityriasis Amiantacea

Haytoğlu¹,

Erdemir²,

Işık³

et al. 2013

Istanbul Med J

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Amaç: Pitiriyazis amiantasea (PA) üst üste kiremit tarzı dizilim gösteren, saç ve saçlı deriye yapışık, kalın, gümüş rengi skuamlarla karakterize bir tablodur. Sebebi bilinmemekle birlikte, çeşitli inflamatuar durumlara karşı saçlı derinin bir reaksiyonu olduğu düşünülmektedir. Bu çalışmada; kliniğimizde rastladığımız PA'lı hastaların kayıtlarını inceleyerek hastalığın klinik özellikleri, eşlik eden hastalıkları, etyopatogenezde rol oynayabilecek bakteriyel ve süperfisiyel fungal ajanları ortaya koymayı amaçladık. Sonuç: Çalışmamızda PA'nın literatürde bildirilen örneklere benzer olarak en sık seboreik dermatit ve psöriyazis vulgaris ile ilişkili olduğu saptandı. Ancak, terapötik yaklaşımı etkileyeceği için yüzeyel fungal ve bakteriyel enfeksiyonların da etyopatogenezde rol oynayabileceği unutulmamalıdır.Anahtar Kelimeler: Skalp dermatozları, psöriyazis, seboreik dermatit, tinea kapitis, staphylococcus aureus, pitiriyazis amiantasea Objective: Pityriasis amiantacea (PA) is characterized by thick, silvery, adherent scales, which surround the base of scalp hair. The exact cause of PA is unclear and it is claimed to be a reaction pattern of the scalp to various inflammatory scalp conditions. In this study, we intended to describe the clinical features, to search the microbiologic etiology and to evaluate the associated diseases.

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Section: Discussionunclassified

Section: Introductionunclassified

A Research on Clinic and Ethiopathological Factors in Pityriasis Amiantacea

Haytoğlu¹,

Erdemir²,

Işık³

et al. 2013

Istanbul Med J

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“…Epidermal nevi may in some instances be congenital or assume a linear configuration permitting clinical distinction from psoriasis. Two obscure entities, pityriasis amiantacea (PA) 17 and ostraceous or rupioid psoriasis (RP), 18 can also be considered in the clinicopathological spectrum of this entity. PA consists of asbestos-like adherent scales that characteristically matt tufts of scalp hair.…”

Section: Discussionmentioning

confidence: 99%

Verrucous Psoriasis: A Distinctive Clinicopathologic Variant of Psoriasis

Khalil¹,

Keehn²,

Saeed³

et al. 2005

The American Journal of Dermatopathology

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Psoriasis is capable of presenting in a variety of clinical and pathologic guises including a rarely described variant variably termed hypertrophic or verrucous psoriasis. Herein, we describe the clinical and pathologic attributes of a large series of patients with this unusual variant of psoriasis and distinguish it from other entities in the differential diagnosis. The histopathologic features and clinical and demographic attributes of a series of 12 cases from 12 patients were reviewed by a single dermatopathologist (MM). The 12 patients consisted of 7 males and 5 females with an average age of 61.8 years (males 38-93 years, females 41-71 years). Eight of the patients were Caucasian, 3 Hispanic and 1 African-American. Six of the lesions were located on the knees, 4 involved the elbows, and 2 were seen on the dorsum of the hands (metacarpal-phalangeal joint). The clinical appearance of the lesions consisted of flesh-toned to white mammillated plaques (8 cases) and coalesced papules (4 cases). Each of the biopsies showed regular psoriasiform epidermal hyperplasia with acanthosis, hyperkeratosis, and either spongiform neutrophilic or Munro micro-abscesses. In addition, each showed papillomatosis with bowing of the peripheral rete ridges toward the center of the lesion (buttressing). At high power, epidermal neutrophils were seen in particular surmounting the tips of the suprapapillary plates with accompanying serum. Hypergranulosis and koilocytic change were not observed in any of the lesions. Human papilloma virus (HPV) immunostaining and periodic acid Schiff (PAS) special staining for fungi were negative. Verrucous psoriasis is a distinctive variant of psoriasis with overlapping clinical and pathologic features that might prompt consideration of verruca vulgaris. The presence of epidermal papillomatosis and epidermal buttressing seen in these lesions is reminiscent of the histologic features of verruca vulgaris. Similarly, the presence of coalesced papules might prompt clinical consideration of verruca vulgaris as well. It is likely that this under recognized clinicopathologic entity represents a patterned response of the epithelium to repeated trauma/irritation typical of the anatomic locations that were encountered in this series. Recognition of this entity should preempt confusion with verruca vulgaris or other entities capable of producing wart-like epidermal changes.

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“…A specifi c scalp fi nding that is associated with psoriasis, but may be noted even in the absence of psoriasis, is pityriasis amiantaceia, presenting as thick hyperkeratotic concretions attached to the hairs accompanied by scalp erythema. Children in Scandinavia with pityriasis amiantaceia have a stronger family history and personal tendency towards psoriasis than children in the general population [ 53 ]. Some authors believe pityriasis amiantaceia is de facto psoriasis, often scalp limited, and usually of childhood.…”

Section: Diagnosis and Clinical Characteristicsmentioning

confidence: 99%

Pediatric Psoriasis

Pepper¹,

Pothiawala²,

Silverberg³

2014

Advances in Psoriasis

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Psoriasis is a chronic multi-system infl ammatory condition with an autoimmune component. One-third to one-half of cases have onset in childhood. There are a variety of pediatric variant types of psoriasis, including generalized disease, that is similar to adult psoriasis, and types distinctive to childhood, including diaper involvement and pityriasis amiantacea. Pediatric psoriasis is associated with infectious triggers and exacerbation by the Koebner phenomenon. Children with psoriasis may have more of a tendency toward obesity as refl ected by a large waist circumference. More extensive disease in childhood is associated with a poor quality of life. Therapeutics of pediatric psoriasis generally requires a global approach including identifying infectious triggers, addressing health risks including obesity, and psychological support. Prescription care includes application of mid-potency topical corticosteroids and/or calcipotriene, phototherapy with Narrowband UVB or excimer laser. In severe cases, cyclic prescribing of systemic agents for 6-12 months including methotrexate, cyclosporine and etanercept can aid in disease clearance with minimization of side effects.

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Pityriasis amiantacea and Psoriasis

Cited by 15 publications

References 5 publications

A Research on Clinic and Ethiopathological Factors in Pityriasis Amiantacea

A Research on Clinic and Ethiopathological Factors in Pityriasis Amiantacea

Verrucous Psoriasis: A Distinctive Clinicopathologic Variant of Psoriasis

Pediatric Psoriasis

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