eMedicine Specialties > Infectious Diseases > Skin and Soft-Tissue Infections
Pityriasis: Differential Diagnoses & Workup
Updated: Mar 2, 2009
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
Differential Diagnoses
Other Problems to Be Considered
Pityriasis versicolor (tinea versicolor)
Guttate psoriasis
Seborrheic eczema
Parapsoriasis
Drug eruptions/toxins (eg, arsenic, bismuth, barbiturates, gold, captopril, organic mercurials)
Pityriasis lichenoides (extremity lesions)
Pityriasis rubra pilaris
Tinea
Lichen planus
Seborrheic dermatitis
Nummular eczema
Pityriasis alba (on the face, arms, and thorax in children and young adults)
Workup
Laboratory Studies
- In most cases of pityriasis rosea, laboratory studies are unnecessary.
- Syphilis should be strongly considered in the differential diagnosis.
- Generally, order a rapid plasma reagin (RPR) test, and ensure that the patient receives follow-up care.
More on Pityriasis |
| Overview: Pityriasis |
Differential Diagnoses & Workup: Pityriasis |
| Treatment & Medication: Pityriasis |
| Follow-up: Pityriasis |
| References |
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References
Amer A, Fischer H, Li X. The natural history of pityriasis rosea in black American children: how correct is the "classic" description?. Arch Pediatr Adolesc Med. May 2007;161(5):503-6. [Medline].
Robati RM, Toossi P. Plantar herald patch in pityriasis rosea. Clin Exp Dermatol. Mar 2009;34(2):269-70. [Medline].
Kempf W, Adams V, Kleinhans M, et al. Pityriasis rosea is not associated with human herpesvirus 7. Arch Dermatol. Sep 1999;135(9):1070-2. [Medline].
González LM, Allen R, Janniger CK, et al. Pityriasis rosea: an important papulosquamous disorder. Int J Dermatol. Sep 2005;44(9):757-64. [Medline].
Rajpara SN, Ormerod AD, Gallaway L. Adalimumab-induced pityriasis rosea. J Eur Acad Dermatol Venereol. Oct 2007;21(9):1294-6. [Medline].
Chuh AA, Dofitas BL, Comisel GG, et al. Interventions for pityriasis rosea. Cochrane Database Syst Rev. Apr 18 2007;CD005068. [Medline].
Rasi A, Tajziehchi L, Savabi-Nasab S. Oral erythromycin is ineffective in the treatment of pityriasis rosea. J Drugs Dermatol. Jan 2008;7(1):35-8. [Medline].
Chuang TY, Ilstrup DM, Perry HO, et al. Pityriasis rosea in Rochester, Minnesota, 1969 to 1978. J Am Acad Dermatol. Jul 1982;7(1):80-9. [Medline].
Cohen EL. Pityriasis rosea. Br J Dermatol. Oct 1967;79(10):533-7. [Medline].
Harman M, Aytekin S, Akdeniz S, et al. An epidemiological study of pityriasis rosea in the Eastern Anatolia. Eur J Epidemiol. Jul 1998;14(5):495-7. [Medline].
Hartley AH. Pityriasis rosea. Pediatr Rev. Aug 1999;20(8):266-9, quiz 270. [Medline].
Parsons JM. Management of toxic epidermal necrolysis. Cutis. Oct 1985;36(4):305-7, 310-1. [Medline].
Tay YK, Goh CL. One-year review of pityriasis rosea at the National Skin Centre, Singapore. Ann Acad Med Singapore. Nov 1999;28(6):829-31. [Medline].
Wyndham M. Pityriasis. Practitioner. Jun 1997;241(1575):358. [Medline].
Further Reading
Keywords
pityriasis, pityriasis rosea, pityriasis circinata et marginata of Vidal, papulosquamous skin eruption, pityriasis lichenoides, pityriasis rubra pilaris, pityriasis rosea perstans, papular pityriasis rosea, vesicular pityriasis rosea, purpuric pityriasis rosea, inverse pityriasis rosea, herald patch
Differential Diagnoses & Workup: Pityriasis