Verruca vulgaris

Cantharidin is the active irritant isolated from cantharides. It is mainly used in the treatment of molluscum contagiosum and verruca vulgaris, particularly periungual warts. 

Figure 23-22 Types of verruca (A) verruca vulgaris, (B) verruca plana, and (C) cutaneous horn. (Courtesy Lloyd Pate, O.D.)...

Verruca vulgaris, verruca plana, and cutaneous horn are forms of viral warts produced by the human papilloma virus (HPV).They are caused by an overgrowth of normal epithelium that may become keratinized and pigmented. Because they occur only in the superficial tissue layer, the body does not recognize them as foreign and therefore does not mount an immune reaction. They are most commonly found in children and young adults and may... 

Egawa K, Honda Y, Ono T, et al. Immunohistochemical demonstration of carcinoembryonic antigen and related antigens in various cutaneous keratinous neoplasms and verruca vulgaris. Br J Dermatol. 1998 139 178-185. 

In refractory condylomata acuminata (genital warts), intralesional injection of various IFNs is associated with complete clearance in 36-62% of patients, but other treatments are preferred. Relapse occurs in 20-30% of patients. Verruca vulgaris may respond to intralesional IFN-CC. Intramuscular or subcutaneous administration is associated with regression in wart size but greater toxicity. Systemic IFN may provide benefit in recurrent juvenile laryngeal papillomatosis and laryngeal disease in older patients. 

Verruca seborrhoica Verruca vulgaris Lentigo maligna melanoma Malignant melanoma... 

Thus, we assume a reduced ALA penetration or uptake in lesions such as verruca vulgaris, thick solar keratosis, or psoriatic lesions due to the hyperkeratotic areas which may limit penetration of ALA and, in addition, of the exciting light. The weak fluorescence in Kaposi s sarcoma or the lack of fluorescence in melanoma or naevi is probably mainly due to the high pigmentation of these tissues and the consequent lower absorption as well as emission of light. 

The client with a verruca vulgaris (wart) on the left ring finger below the knuckle is prescribed a colloidal acid solution. Which information should the nurse discuss with the client ... 

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