|Year : 1993 | Volume
| Issue : 3 | Page : 129
Pityriasis rosea unilateralis
A Chopra, RR Mittal, D Prasad
Source of Support: None, Conflict of Interest: None
The classical pityriasis rosea presents with erythematous papulosquamous lesions but it has got many morphological variants. The unilateral pityriasis rosea is a very rare variant of PR. We are reporting a case of unilateral pityriasis rosea.
Keywords: Pityriasis rosea
|How to cite this article:|
Chopra A, Mittal R R, Prasad D. Pityriasis rosea unilateralis. Indian J Dermatol Venereol Leprol 1993;59:129
| Introduction|| |
Pityriasis rosea (PR) is a self-limiting disease characterized by erythematopapulosquamous lesions usually distributed on trunk, neck and proximal parts of extremities with minimal constitutional symptoms. In about 20% of patients the picture diverges from the classical one. Papules, urticaria, vesicles, bullae, lichenoid lesions, non-palpable purpura, erythema multiforme-like lesions, gigantic plaques, and even exfoliative dermatitis have been reported .  Delcampo reported a unilateral variant of PR. 
| Case Report|| |
A 11-year-old boy presented with mildly pruritic small oval erythematous plaques over left side of upper trunk and left upper arm. A single lesion was seen over left cheek. The herald patch was not present. The most of the lesions were oval, distributed with their long axes following the lines of cleavage of the skin, with peripheral collarette of scales. The lesions remained confined to the left side and no new lesions were seen during follow-up [Figure - 1]. The lesions healed within 3 weeks with slight hypopigmentation. The routine tests were normal and the histopathological findings were consistent with the diagnosis of PR.
| Comments|| |
Pityriasis rosea unilateralis is very rare variant of PR, first reported by Delcampo.  Our case showed the lesions of PR over left side only. In our case the lesions were few in numbers and tended to remain localized.
| References|| |
|1.||Wasilew SW. Pityriasis rosea (Gibert). Z Hautkr 1981; 57: 1028. |
|2.||Parson, Richmond. Pityriasis rosea update. J Am Acad Dermatol 1986; 15: 159-67. |
|3.||Delcampo DV, Barsky S, Tisocco L, et al. Pityriasis rosea unilateralis. Int J Dermatol 1983; 312-7. |
[Figure - 1]
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