Unilateral pityriasis rosea in a child

Abstract

Background: Various atypical variants of pityriasis rosea were published in the literature. There are very few reports abour pityriasis rosea being unilateral.Main observations: We present a female child who presented with acute onset of scaly eruptions clinically consistent with a diagnosis of pityriasis rosea, affecting only one side of the body involving waist, thigh, forearm and leg on right side.Conclusions: It is extremely unusual for pityriasis rosea to present the eruptions only on one side of the body. This case is presented here for its rarity in clinical practice.

Unilateral pityriasis rosea

“…[5] To the best of our knowledge, only five cases with unilateral PR were reported previously. [12678] This report presents a rare, unilateral PR case with one-sided involvement.…”

Unilateral pityriasis rosea in a child: A rare clinical presentation

“…Atypical variants are rarely seen in children. To the best of our knowledge, only seven cases with unilateral PR were reported previously 4,[8][9][10][11][12][13] . Six of the reported cases were adults, in four of them lesions were located on the trunk, in two of them were located on the lower extremity 4,[8][9][10][11][12] .…”

“…Six of the reported cases were adults, in four of them lesions were located on the trunk, in two of them were located on the lower extremity 4,[8][9][10][11][12] . Only one child with unilateral involvement was reported and the lesion of this case was located on the extremity 13 . In our case, the lesion was located on the trunk unilaterally, so this case is different from the others.…”

Pityriasis rosea: An update on etiopathogenesis and management of difficult aspects

“…[ 25 ] Zawar described an infant with the acral distribution of both primary and secondary lesions where classical annular scaly lesions were located on wrists, palms, lower legs, feet, and sole with sparing of trunk and proximal parts of limbs. [ 26 ] In such patients, EM, syphilis, necrolytic acral erythema, and drug eruptions should be excluded Unilateral: This is an extremely rare variant reported in both children and adult where the lesions were located on one side of body and patient had herald patch with classical secondary lesions[ 27 28 ] Blaschkoid pattern: Here, the lesions follow the Blaschko's line[ 29 ] Limb-girdle: Also known as PR of Vidal; here, the eruption is limited to shoulders or pelvic girdle, thus involving axilla and groins. Lesions are usually larger and more annular[ 2 ] Oral mucosa: It may be involved in 16% of patients, and the lesions may be punctuate, erosive, bullous, or hemorrhagic but are usually asymptomatic in nature[ 2 ] Localized: Here, the eruptions are localized to one part of the body.…”

“…Unilateral: This is an extremely rare variant reported in both children and adult where the lesions were located on one side of body and patient had herald patch with classical secondary lesions[ 27 28 ]…”