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

Are other forms of tuberculosis cutis met with?

A papulo-pustular eruption is sometimes observed, especially on the upper extremities and face; sluggish and chronic in character and leaving small pit-like scars; has been known as the small pustular scrofuloderma.

Fig. 49.

Tuberculosis Verrucosa Cutis (patient had a coexistent pulmonary tuberculosis).

An ulcerative papillomatous or verrucous tuberculosis of the skin (tuberculosis verrucosa cutis) is also occasionally noted, most commonly seated upon the lower leg or the back of the hand. It may be slight or extensive. Its mildest phase is the so-called verruca necrogenica.

Describe verruca necrogenica.

Verruca necrogenica is a rare, localized, papillary or wart-like formation, occurring usually about the knuckles or other parts of the hand.

It begins, as a rule, as a small, papule-like growth, increasing gradually in area, and when well advanced appears as a pea, dime-sized or larger, somewhat inflammatory, elevated, flat, warty mass, with usually a tendency to slight pus-formation between the hypertrophied papillæ; the surface may be horny or it may be crusted. It tends to enlarge slowly and is usually persistent, but it at times undergoes involution.

Fig. 50.