<unk>  is a common disease that mostly affect children in preschool age and school aged children as well. Outbreaks of<unk>  have occurred in the different settings like swimming pools.<unk>  may be classified according to virus sub-types based on restriction endonuclease analysis into 4 different subtypes. There is not enough evidence about correlation of<unk>  subtypes and the disease features or anatomical distribution of lesions.<unk>  is usually transmitted via direct contact with a lesion route to the human host. Following transmission, the<unk>  uses the human body cells to replicate. On gross pathology, a central umbilication, and punctiform vessels are characteristic findings of<unk> . On electronic microscopic analysis, typical brick-shaped poxvirus particles inside the infected tissue are characteristic findings of<unk> . he most important risk factors associated with<unk>  include: childhood age, closer contact sports, swimming-pool attendance , sexual relationship and multiple sexual partners, immunodeficient statessuch as inherited immunodeficiencies, human immunodeficiency virus (HIV) infection, and following treatment with immunosuppressive drugs. The hallmark of<unk>  is 2 to 5 mm in diameter lesions that spares over hands and feet. The mainstay of therapy for<unk>  is topical treatment.
Molluscum contagiosum
Tinea manuum
Lichen myxedematosus
Lichen simplex chronicus
Linea negra
Lichen nitidus
Epidermodysplasia verruciformis
Lichen spinulosus