Pityriasis: Symptoms and Treatment
Pityriasis is a fungal disease that affects the stratum corneum.The disease is also called multi-colored lichen because of the appearance on the body of rounded scaly foci of different colors.Abnormal lichen often occurs in young people at the age of twenty-forty years, which is characteristic of men in most cases.Children suffer from colorful lichen rarely.Table of Contents: Causes of Onset Symptoms of Pungent Lichen Diagnosis of Pityriasis Multicolored Lichen Treatment of Pungent Lishaya in Man Prophylaxis
In the appearance of pityriasis lichen, yeast-like fungus Pityrosporum is to blame. There are several forms of this fungus:
- Oval( ovale);
- Round( orbiculare);
- Mycelial( Malassezia furfur).
The first two forms of Pityrosporum are representatives of normal skin microflora and do not represent any danger.And Malassezia furfur is a pathogenic form of the fungus, which leads to the development of pityriasis.Forms of Pityrosporum can pass into each other.
- Increased sweating of the skin;
- Change in sweat composition;
- High temperature and humidity of the environment;
- Diseases of the digestive tract;
- Infectious diseases;
- Endocrine disorders( due to illness, oral contraceptive use, pregnancy);
- Vegetative-vascular disorders;
- Decreased immunity.
Symptoms of Pityriasis
Pityriasis is accompanied by the appearance of rounded scaly spots on the body.The spots can be of various sizes from a few millimeters to a centimeter in diameter, some of them merge into foci.Localized spots on the chest, back, neck, abdomen, scalp, much less often on the face and limbs.With pityriasis, the feet, palms and mucous membrane of the mouth are never affected.
Primarily, pink spots appear on the skin, which soon turn yellow, and then red and even brown.On the spot of the past spots there remains depigmentation, which persists for several months.These bright spots are particularly noticeable on the tanned skin.
Fungus affects the stratum corneum, which causes skin peeling.In most cases, pityriasis is not accompanied by any uncomfortable sensations, only occasionally there is a mild itching.
Pityriasis is a long-lasting disease that can last for months and years.After the recovery, recurrences of the disease are not excluded.
The clinical picture of pityriasis is so characteristic that it is not difficult to determine the correct diagnosis for a doctor.To confirm the diagnosis, an iodine test is performed.Skin areas along with stains are treated with a 5% iodine solution.The area of the skin, where the horny layer of the skin is very loose - stains more than the healthy skin.Confirm the discernible lichen allows the phenomenon of "shavings" when when patching the spots the upper layers of the skin slough.
For the detection of hidden foci of lichen, a mercury quartz lamp is used.The study is conducted in a dark room.When the skin is illuminated by a lamp, the staining spots are fluoresced with a reddish-yellow or brown light.
In addition, to confirm the diagnosis, scraping of the skin and its microscopic examination are performed.Under the microscope, it is possible to detect the elements of the fungus, the mycelium.
Treatment of pungent lichen
Treatment of pityriasis is based on the use of antifungal agents.In most cases, these drugs are used externally in the form of creams and ointments and only rarely inward in the form of tablets.
These groups of antifungal agents are used:
- Imidazole derivatives - ketoconazole, miconazole, clotrimazole;
- Allylamine compounds - lamizil, terbinafine;
- Pyroxolamine derivatives are cyclopyrox, tolcyclate.
Ointments are applied once or twice a day, and the course of treatment on average lasts two to three weeks.
In the absence of the desired result from local therapy and in severe forms of the disease, antifungal drugs( introconazole, orungal, fluconazole) are prescribed as tablets orally.
At the end of the use of antifungal agents, treatment of the foci with salicylic alcohol is shown for two weeks.This substance contributes to the rejection of the horny layer of the skin.
Given that pityriasis often affects the scalp, it is necessary to use antifungal shampoos, for example, Nizoral.By the way, such shampoos when deprived can also be used as a shower gel.
Pityriasis lichen is infectious.And nevertheless, the patient should use strictly individual clothes, bed linen, towels.The rest of the family should see a dermatologist in order to identify a possible pityriasis lichen from them.
During the treatment it is necessary to constantly disinfect bed and underwear, towels, clothes by boiling in a one-percent soap-soda solution, followed by a five-fold smoothing of wet things with a hot iron.
The fungus feels particularly comfortable in the warm season.Therefore, in order to prevent relapse, prophylaxis should be carried out from March to May.For this purpose, shampoos with ketoconazole( for example, Nizoral) are used to treat the scalp and body every month for three consecutive days.In addition, you can treat the skin with salicylic alcohol once a week.
People with pityriasis in the history should be carefully monitored with hygiene, regular water procedures, and avoid excessive sweating.
Grigorova Valeria, medical reviewer