Causes of psoriasis is not fully understood. Medicine and patients " experience confirms the impossibility of the transmission of disease by contact. The disease occurs most frequently in the period from 18 to 25 years, comitatus hyperemia in the patient's body.
Causes of psoriasis:
- diseases of the endocrine system;
- the weakening of the immune system;
- genetic predisposition;
- causes of psoriasis can develop viral infections;
- parasitic invasion;
- the common factors of the disease include stressful situations and emotional turmoil of the nerves;
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- the lack of minerals and vitamins.
Symptoms of psoriasis stages
The disease may occur in 4 stages:- the initial (early);
- progression;
- in the stationary;
- regression.
The symptoms of psoriasis, an initial (first) level. The primary symptoms of the disease in the early phase comes with the emergence of epidermalibus papular rash. After 2-3 days form the silvery-white scales which are easily removed (see picture). Initial symptoms were classified as the development of the" point " of psoriasis.
The stage of progression. This phase is characterized by active growth and the subsequent merger of the papular rash. The primary signs of progression shows a characteristic scaling, which is present on the Central part of the element, this does not affect the peripheral rim.
The secondary characters progression is characterized by the presence of a symptom Kebnera (isomorphic peripheral reactions). When damage to the papular area after 6-8 days (in accordance with the form of damage) there is an element of psoriasis. In addition, the phenomenon of the Kebnera observed, if all of the psoriatic elements elicit a strong scalpendi on the hands, knees, legs, face.
The progressive stage of the accompanied by painful itching, which is not typical for the other phase. In general, the progression may take 2-3 weeks to 3 (or more) months. During the stage of progression it is recommended the preventive administration of hormonal therapy and external means.
Stage at rest. This stage is replaced gradually and does not have a specific time limit. It is able to flow smoothly into the regression, the final form of the illness, but you can progress further. For the characteristic symptoms of the stationary phase of psoriasis is the suspension of the growth plates and prevent the emergence of new papular rash on the face, hands, feet, etc
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In this case, there has been increased peeling, 50% of patients appears psevdoatrofiya classified as the Corolla Voronov. On the peripheral papules occur angustus strip light, color of the skin, resembling tegimentum paper from the cigarettes.
Stage of the regression. This phase is completed the process of inflammation with a characteristic reduction of the peeling, aequandi the Central part of the psoriatic elements with their further resolution (still images). psoriatic elements can be of different shapes (rings, trapeze, arc, etc) and are classified as "geographical psoriasis."
There is another option regressus stage of the disease, when the resolution starts with the peripheral part of the papules without forming scars, and in the absence of atrophic processes. In one part of the body, where the papules may appearance of hyperpigmentation. Note that this separation of the disease on the options is conditional. Most often regressus stage is set for the observation of the patient's symptoms.
Symptoms of psoriasis depending on its shape
Currently there are many psoriatic forms, which differ in external characters, and the severity of symptoms.
The most common forms of psoriasis:
- seborrheic psoriasis the scalp;
- vulgar;
- longus;
- psoriatic arthritis rheumatoid
- exudative
- tears-a form;
- TABULA
- nail;
- pustular;
- erythroderma.
The common forms of the disease are TABULA and psoriasis vulgaris. Be aware that any type of disease is the redness and itching.
TABULA PSORIASIS. This type of disease develops quickly, sometimes in the nervous system and occurs in the acute symptoms. The disease begins with the appearance of a small amount of scaly papules, which are clearly limited, and protrude slightly above the surface (pictured). In the future, papules, can join together to form plaque.
<4_img></4_img>This type of psoriasis can affect large areas of the skin, causing the embarrassing condition of the patient. When damage to the discs can develop bacterial and fungal infections. Refinement of the disease diagnosis is carried out using the confirmation of "psoriatic triad".
VULGAR FORM OF PSORIASIS. This type of psoriasis accompanied by the active papular and the genus TABULA, exfoliation the scalp, back, hands, knees, feet. Rash covered with silvery-white loose statera dolosa and has a clear bright red (pink) borders (pictured). When is the diagnosis of the skin, showed positive signs of "psoriatic triad".
Rashes occur in local areas (knees, scalp, etc..) in 1-2 weeks. This rash is called "guard" or "duty". In some patients the papules are converted into erythroderma. Very rarely vulgar form occurs on the face and in the genital area.
SEBORRHEIC PSORIASIS. This disease is localized on the scalp and is characterized by severe flaking of the head, ears and forehead. Such symptomatology is called "psoriatic crown" (see picture). In the future the crust crack, and the affected skin (especially in children) strongly rursus and itchy, that is a lot of discomfort for the patient. As a rule, the disease is a seasonal development, it is sometimes possible to its appearance in conjunction with the increased excitability of the nervous patient. In contrast, the immune system can cause fungal infection, which aggravates the disease.
For the diagnosis of the disease is difficult because seborrheic psoriasis, such as seborrheic dermatitis its symptoms, however, the seborrheic psoriasis is not the hair loss. For the palpation (feeling) of seborrheic psoriasis it sets out clear boundaries of the plates, and seborrheic dermatitis these borders.
EXUDATIVE FORM. This disease develops in patients with disorders of the endocrine system (diabetes, obesity). Exudative psoriasis often seen in the elderly, possible adverse symptoms in a child.
The main characteristic of this form of psoriasis is the absence of white scaly deposits on the papules. Instead, the rash can be covered with yellow-brown crustae, that triggers excessive release of exudate (inflammatory liquid). This coats the scales of the rash. When removing the crusts exposed to erosiva wet surface. Typical papules of psoriasis are not available, and it seems edematous inflamed area of the body with blurred borders.
Most injuries were located in the skin folds (genitals, armpits, under the breasts), flexura area, on the arms and legs. If the patient has varicose veins, the symptoms of exudative psoriasis of the lower extremities are enhanced.
ON NAIL PSORIASIS. This type of psoriasis is characterized by lesions of clavus panels in the form of a point of depression, which is called "a symptom of a thimble". The nail becomes dull, the outer edge of the infected nail occurs inflammation of rome. It should be noted, friability okolonogtevogo roller and the destruction of the structure of the nail. It should be noted that similar symptoms were observed with the development of onychomycosis, and therefore requires an accurate diagnosis.