Pityriasis Lichenoides
An autoinflammatory process in which lesions may erupt, referred to as pityriasis lichenoides et varioliformis acuta (PLEVA).
Pityriasis Rosea
An inflammatory process characterized by oval lesions marked at the periphery by collarettes of scale and distributed usually along lines of cleavage on the trunk especially, but in a general range from “the neck to the knees.”
Pityriasis Rubra Pilaris
An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules.
Pityriasis Rosea
…An inflammatory process characterized by oval lesions marked at the periphery by collarettes of scale and distributed usually along lines of cleavage on the trunk especially, but in a general range from “the neck to the knees.”…
Pityriasis Lichenoides
…rotique hyperthemique. Ann Derm Syph. 1966; 93: 481-496.Habermann R. Uber die akut vereaufende, nekrotisierende Unterart der Pityriasis lichenoides (Pityriasis lichenoide et varioliformis acuta) Dermatol Z. 1925; 45: 42-48. Mucha V. Uber einen der…
Pityriasis Rubra Pilaris
An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and…
Pityriasis Lichenoides
An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and…
Pityriasis Rubra Pilaris
An inflammatory process in which lesions present themselves clinically as red macules and subtle scaly papules. They soon become so confluent that there is widespread redness and scaling punctuated by islands of skin that ostensibly are spared and…
Malassezia Infections: Key Points
…the enzyme tyrosinase, the rate-limiting step of melanin production, and thereby may produce a hypopigmented presentation of pityriasis versicolor. KOH preparation of superficial scrapings of pityriasis versicolor reveals stubby hyphal forms and…
Malassezia Infections: Initial Evaluation
…an manifest subtle inducible scale. Differential diagnosis Differential diagnosis includes seborrheic dermatitis, pityriasis rosea, pityriasis alba, leprosy, syphilis, vitiligo, parapsoriasis, mycosis fungoides, and anetoderma. Malassezia (formerly…
Viral Exanthems: Initial Evaluation
…thema infectiosum Exanthem subitum (roseola infantum) Epstein-Barr virus Coxsackie virus (Hand-foot-mouth disease) Varicella Pityriasis rosea Gianotti-Crosti syndrome Differential diagnosis The differential diagnosis of viral exanthem includes…
Pityriasis Lichenoides: References
…formis acuta: a heteroduplex analysis of 20 cases. Arch Dermatol 2000; 136:1483. Ersoy-Evans S, Greco MF, Mancini AJ, et al. Pityriasis lichenoides in childhood: a retrospective review of 124 patients. J Am Acad Dermatol 2007; 56:205. Hapa A,…
Candidiasis: Key Points
Key Points Candidiasis is a common skin disorder that typically affects mucosal sites and moist and/or occluded areas of the skin: groin, axilla, inframammary, infra-abdominal pannus, glans penis (in uncircumcised males), and orogenital mucosal…