Part 43 (2/2)

Give a descriptive definition of dermatolysis.

Dermatolysis is a rare disease, consisting of hypertrophy and looseness of the skin and subcutaneous connective tissue, with a tendency to hang in folds.

Describe the symptoms and course of dermatolysis.

It may be congenital or acquired, and maybe limited to a small or large area, or develop simultaneously at several regions. All parts of the skin, including the follicles, glands and subcutaneous connective and areolar tissue, share in the hypertrophy; and this in exceptional instances may be so extensive that the integument hangs in folds. The enlargement of the follicles, natural folds and rugae gives rise to an uneven surface, but the skin remains soft and pliable. There is also increased pigmentation, the integument becoming more or less brownish.

What course does dermatolysis pursue?

Its development is slow and usually progressive. It gives rise to no further inconvenience than its weight and consequent discomfort.

Give the etiology.

The etiology is obscure. It is considered by some authors as allied to mollusc.u.m fibrosum, and, in fact, as a manifestation of that disease, ordinary mollusc.u.m tumors sometimes being a.s.sociated with it. It is not malignant.

What is the pathology?

The disease consists of a simple hypertrophy of all the skin structures and the subcutaneous connective tissue.

What is the treatment of dermatolysis?

Excision when advisable and practicable.

CLa.s.s V.--ATROPHIES.

Albinismus.

What do you understand by albinismus?

Congenital absence, either partial or complete, of the pigment normally present in the skin, hair and eyes.

Describe complete albinismus.

In complete albinismus the skin of the entire body is white, the hair very fine, soft and white or whitish-yellow in color, the irides are colorless or light blue, and the pupils, owing to the absence of pigment in the choroid, are red; this absence of pigment in the eyes gives rise to photophobia and nystagmus. _Albinos_--a term applied to such individuals--are commonly of feeble const.i.tution, and may exhibit imperfect mental development.

Describe partial albinismus.

Partial albinismus is met with most frequently in the colored race. In this form of the affection the pigment is absent in one, several or more variously-sized patches; usually the hairs growing thereon are likewise colorless.

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