Go Licolor versicolor: photo, treatment
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Tonsolithus

Content:

This type of lichen refers to the so-called keratomycosis, which affects only the outer layer of the epidermis (horny) and rarely hair follicles. The transfer of multi-colored depriving is unlikely even with close direct contact with a sick person, through third parties and the object of use - is almost impossible. Inflammatory skin changes are not characteristic.



Causes

The causative agent of multi-colored lichen is a fungus Pityrosporum orbiculare, as well as Malassezia furufur. With conventional microscopy, the pathogen is visualized as curved short filaments of mycelium with numerous clusters of rounded spores. The pathogen can be found in the skin scales, cultivation in artificial conditions on nutrient media is extremely difficult.

The disease affects predominantly young people, to the same extent both women and men. In children, this type of lichen is practically not recorded. The following predisposing factors for the occurrence of multi-colored lichen are known:

  • excessive sweating;
  • lack of personal hygiene and maceration of wet areas of the body;
  • individual predisposition;
  • violation of the physiological processes of desquamation of the stratum corneum epithelium;
  • reduction of local and general immunity;
  • the presence of chronic somatic pathology (tuberculosis infection, diabetes mellitus, vascular dystonia (hypertensive type).


Symptoms of multi-colored lichen

Tonsolithus

Tonsolithus

Chump is characterized by a long course over several months, and sometimes even years. Quite often, relapses of the disease are recorded, the causes of which are not fully understood.

Asymmetrical chaotic location of the affected skin is characteristic of multi-colored lichen. Most often, the lesions of the multicolor lesion are marked on the skin of the back and chest, somewhat more rarely on the abdomen, neck and limbs. In adolescent patients, the lesions of the affected skin can be quite extensive, almost totally covering the entire surface of the body.

With careful examination, it is possible to identify the centers of multi-colored lichen on the hairy areas of the head. However, in this case, the hair and hair follicles themselves are not involved in the pathological process. On the hairy areas of the head, the lesion can be identified only with a special lamp. It is with these hidden sites that the possibility of a multi-colored lichen recurrence is associated.

For elements of the rash of multi-colored lichen, certain phased changes are characteristic, which gave the name of this disease. In the initial period, only in the area around the hair follicle appear yellow-pink spots. Then they acquire a dark brown (brown) or lighter shade (the so-called coffee with milk). The difference in the color of the foci of this lichen caused its name. Spotted multi-colored lichen prone to merge and spread to healthy areas of the skin. The edges of the spots are uneven (scalloped).

Another important distinguishing feature of the varicolored (scaly) lichen is peeling. As a rule, finely lamellar peeling is observed, which is aggravated by mechanical scraping, using scrubs and other cosmetics.

It should be noted that with pityriasis versicolor itch is not characteristic. A person feels only a cosmetic defect from multi-colored spots. Sometimes, on the place of already cured foci of multi-colored lichen, skin is formed which is not amenable to (or weakly amenable to) solar tan. However, certain areas of the human body will be more pale, but this does not indicate a resumption of disease activity.

Diagnosis of multi-colored lichen

Unfortunately, it is far from always on the basis of only clinical symptoms that one can be diagnosed with multi-colored lichen. In addition, it is necessary to make a thorough differential diagnosis to exclude other types of depriving and the subsequent appointment of the correct method of treatment. That is why special diagnostic methods are used.

  1. Balzer's iodine test consists of staining damaged skin with iodine (5% alcohol solution). Areas where there is intense peeling (that is, signs of multi-colored lichen) are painted more intensely than healthy ones. This test allows you to more accurately determine the area of ​​damage to deprive. If you are allergic to iodine, you can use aniline dyes: methylene blue, brilliant green.
  2. The phenomenon of Benye (shavings) when applying scrubbing movements (with a glass slide or in another way) the peeling of lesions with multi-colored lichen is greatly enhanced.
  3. Wood's filter allows you to detect hidden lesions of the pityriasis versicolor, on which the change in skin color and desquamation visible to the naked eye has not yet been observed. Wood's filter is an ordinary glass treated with nickel compounds. When rays of a mercury-quartz lamp pass through it, the depriving foci shine with a specific brown or yellow-red color.

The final way to confirm a diagnosis of chives is the microscopic method. In the field of view of a conventional light microscope, fungal mycelium is detected in human skin scales. It is especially well seen when treating a microdrug with sodium or potassium alkali.

Principles of treatment of multi-colored lichen

The main method of therapy is the prescription of antifungal drugs directly to depriving the lesions (cream or aerosol). The most commonly prescribed are:

  • clotrimazole,
  • ketoconazole
  • terbinafine,
  • bifonazole.

In the presence of allergy, an alternative method of treatment is the rubbing of benzyl benzoate, sulfur-salicylic ointment or sodium hyposulphite.

An important point in the treatment of pityriasis versicolor is the observance of all stages of personal hygiene (regular shower, change of underwear and clothing).


| 7 January 2015 | | 8 184 | Skin diseases
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