Читать книгу Essentials of Diseases of the Skin - Henry Weightman Stelwagon - Страница 11

Table of Contents

What are primary lesions?

Those objective lesions with which cutaneous diseases begin. They may continue as such or may undergo modification, passing into the secondary or consecutive lesions.

Enumerate the primary lesions.

Macules, papules, tubercles, wheals, tumors, vesicles, blebs and pustules.

What are macules (maculæ)?

Variously-sized, shaped and tinted spots and discolorations, without elevation or depression; as, for example, freckles, spots of purpura, macules of cutaneous syphilis.

What are papules (papulæ)?

Small, circumscribed, solid elevations, rarely exceeding the size of a split-pea, and usually superficially seated; as, for example, the papules of eczema, of acne, and of cutaneous syphilis.

What are tubercles (tubercula)?

Circumscribed, solid elevations, commonly pea-sized and usually deep-seated; as, for example, the tubercles of syphilis, of leprosy, and of lupus.

What are wheals (pomphi)?

Variously-sized and shaped, whitish, pinkish or reddish elevations, of an evanescent character; as, for example, the lesions of urticaria, the lesions produced by the bite of a mosquito or by the sting of a nettle.

What are tumors (tumores)?

Soft or firm elevations, usually large and prominent, and having their seat in the corium and subcutaneous tissue; as, for example, sebaceous tumors, gummata, and the lesions of fibroma.

What are vesicles (vesiculæ)?

Pin-head to pea-sized, circumscribed epidermal elevations, containing serous fluid; as, for example, the so-called fever-blisters, the lesions of herpes zoster, and of vesicular eczema.

What are blebs (bullæ)?

Rounded or irregularly-shaped, pea to egg-sized epidermic elevations, with fluid contents; in short, they are essentially the same as vesicles and pustules except as to size; as, for example, the blebs of pemphigus, rhus poisoning, and syphilis.

What are pustules (pustulæ)?

Circumscribed epidermic elevations containing pus; as, for example, the pustules of acne, of impetigo, and of sycosis.