[Peculiarities of clinical picture and differential diagnostics of lupus erythematosus tumidus].

This review is devoted to differential diagnostics and treatment of lupus erythematosus tumidus, a rare form of lupus erythematosus, the data on which are practically absent in the Russian-language literature. The overview of foreign literature is supplemented by personal observations of the authors. Clinical cases are illustrated by photographs and the description of the pathomorphological picture of the disease.

[Vulval dermatitis: localized condition--serious problem].

An overview of the literature of the dermatitis of the vulva is presented. The etiology, epidemiology, clinical manifestations, diagnosis, pathological diagnosis, treatment, and prevention of contact, allergic-contact, atopic, and seborrheic dermatitis of the vulva are described in details. Lichen simplex chronicus is additionally described as complication of chronic itching dermatitis.

[To the problem of parapsoriasis: classification problems (literature review and personal observations)].

In the presented article we discuss the problems of lichenoid and plaque parapsoriasis. The difference in Russian and English classifications are discussed in the historical aspect, as well as review of the literature, and personal authors' observations of nine patients with "small plaque parapsoriasis".

[A kinetic study of the blood serum cholinesterase activity in the freshwater fish Abramis ballerus].

In reaction of hydrolysis of choline and thiocholine esters of carbonic acids at 25 degrees C, cholinesterase activity of the blood serum from the fish A. ballerus has been studied by modified Ellman's method and potentiometric titration method. The activity is maximal in pH region 7.