Essentials of Diseases of the Skin / Including the Syphilodermata Arranged in the Form of Questions and Answers Prepared Especially for Students of Medicine

by Henry Weightman Stelwagon

Verruca vulgaris, verruca plana, verruca plana juvenilis, verruca digitata, verruca filifortnis and verruca acuminata.

Describe verruca vulgaris.

This is the common wart, occurring mostly upon the hands. It is rounded, elevated, circumscribed, hard and horny, with a broad base, and usually the size of a pea. At first it is smooth and covered with slightly thickened epidermis, but later this disappears to some extent, the hypertrophied papillæ, appearing as minute elevations, making up the growth. One, several or more may be present.

Describe verruca plana.

This is the so-called flat wart, and occurs commonly upon the back, especially in elderly people (verruca senilis, keratosis pigmentosa). It is, as a rule, but slightly elevated, is usually dark in color, and of the size of a pea or finger-nail.

Describe verruca plana juvenilis.

The warts are mostly pin-head in size, flat, but slightly elevated, rounded, irregular or square-shaped, and of a light yellowish-brown color. They bear resemblance to lichen planus papules. They are apt to be numerous, often becoming aggregated or fused, and occur usually in young children, and, as a rule, on the face and hands.

Describe verruca filiformis.

This is a thread-like growth about an eighth or fourth of an inch long, and occurring commonly about the face, eyelids and neck. It is usually soft to the touch and flexible.

Describe verruca digitata.