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\begin{document}

\title{Linear vesicular eruption in an immunocompetent patient}



\author[1]{kouki chaima}%
\author[1]{mona korbi}%
\author[1]{Linda Manaa}%
\author[1]{monia youssef}%
\author[1]{hichem hajali}%
\author[1]{jamaleddine zili}%
\affil[1]{Fattouma Bourguiba University Hospital of Monastir}%


\vspace{-1em}



  
  \date{May 15, 2024}


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Clinical image:

A 36-year-old woman presented with an asymptomatic eruption of multiple
pink umbillicated papules in the left part of trunk and under the
umbilical area. There was no history of systemic or skin disease, use of
local or systemic immunosuppressive drugs, or suspect sexual contact.
She reported similar eruption in her child. Dermatologic examination
revealed multiple linear shiny papules in the left part of trunk
measuring approximately 4 to 20 mm. (Fig. 1a-b). Dermoscopy revealed a
polylobular, pinkish-white, amorphous structure in the centre with a
surrounding crown of vessels that did not cross the centre of the lobule
(Fig. 2).

The diagnosis of MC was evoked. The patient was treated by potassium
hydroxide 5\% twice resulting in complete healing in 2 weeks.

Our case illustrated an atypical presentation of MC in immunocompetent
adult. Although recognized nearly 200 years ago, MC still causes a
substantial health-care burden and adversely affects quality of life.

Clinically it appears like shiny papules with a diameter between 2 and 5
mm. The central umbilication is pathognomonic and its localization
concern commonly the face, trunk, and extremities. \textsuperscript{1}

Although easily diagnosed, MC may present as a single lesion or as
several small, inflamed lesions of difficult diagnosis. Atypical
presentations may occur in immunodepression condition, eczematous or
abscessed and sometimes refractory to the usual
treatment.\textsuperscript{2}

To the best of our knowledge, we report the third case of linear MC. In
our patient, the diagnostic was evocated based on the presence of
similar case in the family, clinical characteristics of the lesions and
confirmed by the typical dermoscopic features.

\textbf{References:}

1-Elboukhari K, Achehboune K, Elloudi S, Baybay H, Mernissi FZ. A
strange presentation of molluscum contagiosum in an immunocompetent
child. Our Dermatol Online. 2020;11(2):1-2.

2-Vardhan P, Goel S, Goyal G, Kumar N. Solitary giant molluscum
con-tagiosum presenting as lid tumor in an immunocompetent child. Indian
J Ophthalmol. 2010;58:236--8.

Figures legend:

Fig 1a-b: Linear adjenced shiny papules in the left part of trunk and
par umbilical area.

Fig2: Polylobular, pinkish-white, amorphous structure in the centre with
a surrounding crown of vessels that did not cross the centre of the
lobule

\textbf{Clinical key message:}

Molluscum contagiosum (MC) is a viral infection of the
skin.\textsuperscript{1} It is caused by the MC virus, more commonly
seen in children. The MC lesions may occur anywhere on the skin surface
but are most common in skinfolds, on the face, in the genital region,
and on the lateral trunk, thighs, and
buttocks.\textsuperscript{1}Herein, we describe an adult patient with an
unusual distribution of MC lesions

\subsection*{Acknowledgements:}

{\label{acknowledgements}}

The patients in this manuscript have given written informed consent to
the publication of their case details.\selectlanguage{english}
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