Molluscum Contagiosum

Diagnose molluscum clinically when discrete, firm, shiny, skin-colored or pink papules have a central umbilication, usually measuring approximately 2–5 mm. A hand lens or dermatoscope improves recognition of central yellow-white amorphous structures with peripheral crown vessels. In a child, truncal, limb, facial, axillary, or diaper-area lesions support nonsexual transmission; in adults, genital, inner-thigh, or lower-abdominal lesions should prompt assessment for sexual transmission. ScienceDirect+2ScienceDirectMolluscum contagiosum - an overviewScienceDirectMolluscum contagiosum - an overview | ScienceDirect TopicsPubMedUnderstanding U.S. Healthcare Providers’ Practices and Experiences with Molluscum Contagiosum - PMC

Use lesion scraping with microscopy or punch/shave biopsy when papules are atypical, solitary and large, ulcerated, plaque-like, rapidly changing, or diagnostically consequential. Histology shows endophytic epidermal hyperplasia with pear-shaped lobules and large intracytoplasmic molluscum bodies. Biopsy is particularly important when a lesion could instead represent a keratoacanthoma, basal cell carcinoma, squamous cell carcinoma, condyloma, or another papular tumor. ScienceDirect+2ScienceDirectMolluscum contagiosum - an overviewScienceDirectMolluscum contagiosum - an overview | ScienceDirect TopicsPubMedMolluscum contagiosum: an update and review of new perspectives in etiology, diagnosis, and treatment - PubMed

Treat extensive, giant, coalescent, verrucous, unusually distributed, facial, or treatment-refractory lesions as an immunologic warning pattern rather than routine childhood molluscum. HIV-associated disease may be persistent, recurrent, disseminated, and concentrated on the head, neck, or genital region; severe or atypical disease can be a correlate of cellular immune deficiency. In an immunosuppressed patient with disseminated umbilicated papules, retain disseminated cryptococcosis, histoplasmosis, and bacillary angiomatosis in the differential and obtain tissue diagnosis when lesions are not convincingly typical. ScienceDirect+2ScienceDirectMolluscum contagiosum in patients with human immunodeficiency virus infection: A review of twenty-seven patientsWHO[PDF] Guidelines on the treatment of skin and oral HIV-associated ... - IRISScienceDirectMolluscum Contagiosum Virus - an overview | ScienceDirect Topics

Offer observation for uncomplicated, non-genital molluscum in immunocompetent patients when lesions are asymptomatic and the patient accepts a potentially prolonged course. Spontaneous clearance commonly occurs within 6–18 months; many children clear in 6–9 months, although longer persistence occurs. Observation avoids procedure-related pain, blistering, pigmentary change, and scarring risk from destructive therapy. ScienceDirect+1ScienceDirectMolluscum contagiosum - an overview | ScienceDirect TopicsaadMolluscum contagiosum: Diagnosis and treatment

Favor active treatment when lesions are extensive, repeatedly autoinoculated, associated with eczema or bacterial superinfection, cosmetically distressing, located in areas where friction causes symptoms, or genital in adults. The evidence base and practice patterns support lesion-directed approaches, but treatment selection should account for age, number and location of lesions, skin sensitivity, pain tolerance, and the ability to return for office care. CDC+3CDCClinical Overview of Molluscum Contagiosum | Molluscum Contagiosum | CDCPubMedMolluscum contagiosum: an update and review of new perspectives in etiology, diagnosis, and treatment - PubMedPubMedInterventions for cutaneous molluscum contagiosum - PMCPubMedUnderstanding U.S. Healthcare Providers’ Practices and Experiences with Molluscum Contagiosum - PMC

Do not use topical imiquimod routinely in children: it has not demonstrated effectiveness in children and may cause adverse effects. Cantharidin is an office-applied blistering agent; avoid presenting it as a home therapy. Cryotherapy, curettage, potassium hydroxide, podophyllotoxin, and cantharidin have been associated with higher clearance in systematic reviews, but comparative evidence varies across interventions and populations. Wiley+3WileyTreatments for Molluscum contagiosum: A systematic reviewWileyComparative efficacy of treatments for molluscum contagiosum: A ...CDCClinical Overview of Molluscum Contagiosum | Molluscum Contagiosum | CDCPubMedInterventions for cutaneous molluscum contagiosum - PMC

For patients with HIV, extensive or unusually distributed molluscum is best managed by addressing the underlying immune deficit. ART is recommended as the primary treatment for extensive and/or unusually distributed HIV-associated molluscum; lesion improvement has been observed with immune recovery, although individual response is variable. PubMed+1PubMedEvidence and recommendations on molluscum contagiosum - Guidelines on the Treatment of Skin and Oral HIV-Associated Conditions in Children and Adults - NCBI BookshelfWHO[PDF] Guidelines on the treatment of skin and oral HIV-associated ... - IRIS

Do not rely on conventional destructive therapy alone in advanced HIV or other major immunosuppression. Patients may have persistent, recurrent, fulminant, disseminated, large, hypertrophic, or coalescent lesions and often respond incompletely to traditional treatments. If lesions are atypical or systemic infection is plausible, biopsy before repeated destructive procedures. CDC+2CDCClinical Overview of Molluscum Contagiosum | Molluscum Contagiosum | CDCWHO[PDF] Guidelines on the treatment of skin and oral HIV-associated ... - IRISScienceDirectMolluscum Contagiosum Virus - an overview | ScienceDirect Topics

In an adult with new-onset molluscum and unknown HIV status, offer HIV testing when clinical setting and epidemiology indicate risk; formal WHO guidance specifically recommends testing adults with new-onset disease in high HIV-prevalence settings. In U.S. practice, extensive, facial, giant, refractory, or disseminated lesions should lower the threshold for HIV screening and medication review. PubMed+1PubMedEvidence and recommendations on molluscum contagiosum - Guidelines on the Treatment of Skin and Oral HIV-Associated Conditions in Children and Adults - NCBI BookshelfWHO[PDF] Guidelines on the treatment of skin and oral HIV-associated ... - IRIS

Advise patients to avoid picking, shaving through, or scratching lesions because disruption promotes autoinoculation and can create a portal for bacterial infection. Cover lesions that cannot be fully clothed, particularly during contact activities, and use individualized coverings for swimming or similar settings. PubMed+1PubMedMolluscum Contagiosum - StatPearls - NCBI Bookshelf - NIHCDCPreventing Molluscum Contagiosum in Schools, Daycares, and Pools | Molluscum Contagiosum | CDC

Counsel against sharing towels, clothing, razors, sports equipment, toys, or other personal items that contact lesions. Direct skin contact, contaminated items, and autoinoculation all contribute to spread; athletes in close-contact settings and households should receive the same practical precautions. aad+3aadMolluscum contagiosum: OverviewPubMedMolluscum Contagiosum - StatPearls - NCBI Bookshelf - NIHPubMedMolluscum Contagiosum: Epidemiology, Considerations, Treatment ...CDCPreventing Molluscum Contagiosum in Schools, Daycares, and Pools | Molluscum Contagiosum | CDC

Do not recommend exclusion from school, daycare, or swimming for children solely due to molluscum. CDC advises that attendance is unnecessary to restrict; covering lesions reduces transmission and also limits scratching. CDCCDCPreventing Molluscum Contagiosum in Schools, Daycares, and Pools | Molluscum Contagiosum | CDC

For anogenital molluscum, advise abstaining from sexual contact until clinical evaluation, because direct skin contact can transmit infection and sexual transmission may coexist with other STIs. Evaluate sexually active adolescents and adults for other STI risks rather than assuming all genital lesions are nonsexual. ScienceDirect+1ScienceDirectMolluscum contagiosum - an overview | ScienceDirect TopicsPubMedMolluscum Contagiosum: Epidemiology, Considerations, Treatment ...