Lichen is a large group of skin diseases of various origins, which are characterized by the appearance of spots, papules or nodules on the skin, usually accompanied by peeling, as well as pigmentation disorders, according to Pannochka, an Internet publication for girls and women from 14 to 35 years old.. net People with reduced immunity are more susceptible to the disease.

Lichen is a fungal disease.

Types of lichen Depending on the etiology and nature of the course of the pathology, the following main types of lichen are distinguished:.

pink (lichen of Zhiber);

pityrious (multicolored, vernacular. \;

ringworm (trichophytosis, dermatophytosis, dermatophytosis, dermatomycosis, obsolete. scab);

weeping lichen (eczema);

lichen planus;

herpes zoster (herpes zoster, Herpes zoster).

Causes and risk factors Viruses and microscopic fungi serve as causative agents of lichen, but not all people in contact with the pathogen develop the disease - a prerequisite is weakening of the immune system. Risk factors for developing lichen include:.

hereditary predisposition (hereditary weakness of one of the links of the immune system);

physical and emotional overload;

hypothermia or overheating;

infectious diseases;

endocrine disorders; and etc.

I deprive people with reduced immunity to a greater extent.

Each type of lichen is due to the action of its own causative factor, in some cases the exact cause of the onset of the disease has not been identified, only the predisposing conditions are known.

Causes of pink lichen It often develops against the background of diseases of the digestive tract, respiratory infections, may be the result of vaccinations, stressful situations. A surge in the incidence occurs in the autumn-spring period, with reduced immunity, relapses of the disease are possible. Adults are more prone to pathologies. Pink lichen is not transmitted by contact.

Causes of pityriasis versicolor The causative agents of pityriasis versicolor are microscopic yeast-like fungi of three species (Malassezia furfur, Pityrosporum orbiculare, Pityrosporum ovale), which affect the stratum corneum of the epidermis. Risk factors include excessive sweating, dysfunction of the sebaceous glands, high levels of cortisol in the blood, long-term treatment with steroid hormones. Not transmitted by contact.

Pityriasis versicolor occurs as a result of damage to the epidermis by yeast-like fungi Causes of ringworm The infectious agent of this type of lichen is microscopic fungi (Epidermophyton, Trichophyton, Microsporum). Children are more susceptible to the disease. The contact-household transmission route from person to person or from animal to person is characteristic.

Causes of weeping lichen The causes of this type of lichen can be both exo and endogenous.. External (exogenous) include allergic reactions, mechanical, thermal or chemical damage. Internal (endogenous) factors are genetic predisposition, infectious diseases, diseases of the digestive tract, urinary, endocrine and nervous systems, long-term use of drugs and other conditions leading to immunodeficiency. All age categories are affected.

Causes of lichen planus arises against the background of disorders of immune and metabolic processes in the body, in addition, a hereditary predisposition to the disease has been established. Occurs in all age groups, but women 40-60 years old are more susceptible to disease.

Shingles Causes Causes of reactivation of the varicella zoster virus (Varicella zoster). Persons of elderly and senile age are more susceptible to the disease. Risk factors include immunodeficiency, malignant neoplasms, chemotherapy, long-term use of corticosteroids. Upon contact with a patient with shingles, children who have not previously had chickenpox may develop chickenpox.

Shingles develops as a result of reactivation of the varicella-zoster virus Symptoms of lichen The clinical picture of lichen depends on its type.

Symptoms of pink lichen The initial symptom of this type of lichen is the appearance on the skin of a single large pink spot (maternal plaque) up to 3 cm in size. The stain has a rounded shape, after a few days it becomes yellow and begins to peel off. After 1-1.5 weeks, multiple smaller eruptions (daughter plaques) appear on the skin (often on the back, chest and / or limbs). The elements of the rash are surrounded by a pink roller, covered with scales, the central part of the element sinks somewhat, individual elements are not inclined to merge. Itching and other unpleasant sensations may be absent or only slightly manifest. After the rash disappears, spots of hypo- or hyperpigmentation remain on the skin.

Pityriasis rosea begins with a single pink patch on the skin Symptoms of pityriasis versicolor The disease begins with a single rounded patch, after which the same spots, but smaller in size, appear on the skin and scalp. The spots are not inflammatory in nature, have clear outlines, their color can vary from pale yellow to brown (yellowish brown, brown, brown, etc.. ), pityriasis peeling is observed. Spots form on the skin of the neck, shoulders, chest, abdomen, back, armpits and groin. On the scalp, rashes can also be, but often remain invisible, hair with this form of lichen is not affected. The spots are prone to fusion and peripheral growth; sunburn does not appear on the affected skin areas. Light areas of the skin at the site of former spots can remain for several years after the treatment of pityriasis versicolor. Other signs of shingles may be itchy skin and excessive sweating..

With pityriasis versicolor, no sunburn appears on the affected areas of the skin. The disease begins with the appearance of one or more scaly spots of irregular shape, covered with a light bloom and broken off hair, which falls out on the affected areas (hence the name " The patient is worried about itching on the affected areas of the skin, sometimes very intense.

With ringworm, the patient is worried about intense itching Symptoms of weeping lichen Weeping lichen is manifested by bubbles with serous and hemorrhagic contents, which, after opening, become crusted, the affected areas are hyperemic and edematous. Patients are worried about severe itching, aggravated in the evening or upon contact with water.

Weeping lichen can cause erythroderma, often there is a bacterial or fungal infection with the development of pyoderma.

Symptoms of lichen planus: Lichen planus debuts with pinkish-purple papules with a shiny surface. Elements of the rash are localized on the trunk, limbs, mucous membranes of the oral cavity and external genital organs, their appearance may be accompanied by itching and soreness. In some cases, damage to the mucous membranes occurs in isolation.

Symptoms of shingles In this form of the disease, the appearance of a rash on the skin is preceded by intense pain of a burning character that occurs in the area of \u200b\u200bthe affected nerves.. A few days later, vesicular (vesicular) rashes appear along the peripheral (most often intercostal) nerves, which is caused by the migration of the virus along the peripheral nerves into the skin. The rash usually forms on the trunk, but can occur on the face and limbs; usually only one side is affected.

After some time, the vesicles dry out, peeling may occur on the affected areas. Depending on the severity of the disease, the clinical picture can vary from minor symptoms of general intoxication to severe lesions of the central nervous system.. Throughout the disease, the patient suffers from an intense pain syndrome, after the rash resolves, postherpetic neuralgia develops, which is persistent in nature - it can bother for several months or even years.

Shingles is accompanied by severe pain at the site of neboleem lesion. net.