The causes of the evolution of psoriasis has not been finally studied. Of the medicine and the patient experience confirm the impossibility of the transmission of disease by contact. The more often the disease appears in a period of 18 to 25 years, the comitatus hyperemia on the body of the patient.
The reasons of the appearance of psoriasis:
- diseases of the endocrine system;
- the weakening of the immunity;
- a genetic predisposition;
- the causes of psoriasis can be the development of viral infections;
- infestations intestinal;
- common factors in disease development are stress and emotional disorders on the nervous system;
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- a lack of the body of trace elements and vitamins.
The symptoms of psoriasis of the phases
The disease may occur in 4 stages:- start date (at the beginning);
- progression;
- fixed;
- regression.
The symptoms of psoriasis of the primary (from the first phase. Primary signs of the disease at the early stage with the appearance of the epidermalibus rash papular. After 2-3 days it formed a silvery-white flakes, which are easily disposed of (on the photo). The symptomatology is initially classified, such as the development of a "point" of psoriasis.
The phase progression. This phase is characterized by active growth and followed by the merger of the eruption papular. Primary signs of progression are manifested characteristic of flaking present on the central part of the element, without affecting distal of the corolla.
Secondary signs of progression are characterized by the presence of a symptom Kebnera (isomorphic priphrique reaction). When the травмировании papular area in 6 to 8 days (according to the form of all of the brands of injury) is an element of psoriasis. In addition, the phenomenon of Kebnera may occur if the psoriatic elements cause a strong scalpendi on the hands, elbows, legs, face.
Progressive stage accompanied by a tear of the itch, is not characteristic for the other stages. Generally, the progression can last 2-3 weeks and up to 3 months. During the phase of progression, it is recommended for the prevention of the receipt and processing of hormonal means.
The stationary phase. This step replaces progressive and does not have the some of the limits of time. It is able to smoothly overflow into the regression, the final form of the disease, but is able to move forward and on. The characteristic symptoms of the stationary phase of psoriasis applies to the suspension of the growth of platelets and the occurrence of a new rash papular on the face, hands, elbows, etc
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In this case, we observe the strengthening of the flaking, 50% of patients occurs psevdoatrofiya, классифицируемая, as the corolla Voronov. On priphriques папулах occurs angustus a strip of clear skin, recalling tegimentum the cigarette paper.
The regression phase. This step completes the process of inflammation that is characteristic of the decline of the chipping, aequandi the central part of the psoriatic elements with their pursuit of the resolution (on the photo). psoriatic elements can be of different shapes (rings, trapeze, bow, etc) and are classified as "geographical psoriasis".
There is another option regressus stage of the disease, when the resolution begins by the peripheral part of the papules, of which, the scar tissue, and in the absence of atrophic processes. On the ground of the body, where it has been observed papules may be the emergence of hyperpigmentation. Note that this division of the disease on the options is conditional. The more often regressus the stage is determined by the method of observation of the symptomatology of the patient.
The symptoms of psoriasis as a function of its shape
At the present time, there are many different kinds of forms that differ from each other outward signs and the severity of the symptomatology.
The most common forms of psoriasis:
- seborrheic scalp psoriasis;
- vulgar;
- longus;
- rheumatoid, arthritis psoriatic
- pericardial
- norman;
- TABULA
- of the nail;
- pustular;
- erythroderma.
The most common forms of the disease are TABULA and psoriasis vulgaris. It is necessary to take into account that when any form of the disease may occur redness and itching of the skin.
TABULA PSORIASIS. This kind of disease develops quickly, sometimes on the nervous system and is responsible for the symptomatology. Starting a disease with the appearance of a small number of papules scaly, which are clearly limited, and slightly protruding above the surface (on the photo). In the future, the papules may join together, forming plaque.
<4_img></4_img>This type of psoriasis is able to hit the large areas of skin, causing uncomfortable state of the patient. When the травмировании an atheromatous plaque may be the development of fungal and bacterial infection. The refinement of diagnosis of the disease is performed with the help of the confirmation of the "psoriatic triad".
VULGAR FORM OF PSORIASIS. This type of psoriasis is accompanied by active papular and kind of TABULA, peeling of the scalp, back, hands, elbows, feet. The eruption is covered with silver-white рыхлыми statera dolosa and has a bright red (pink) as the border (on the photo). When the diagnosis on the skin reveals positive signs of "psoriatic triad.
Skin rashes appear in the places (on the elbows, scalp, etc) after 1-2 weeks. This rash is called "guard dog" or "service". A certain category of patients the papules are converted into erythroderma. Very rarely vulgar form manifests itself on the face and in the genital area.
SEBORRHEIC PSORIASIS. This type of disease is localized to the scalp and is characterized by a strong peeling of the head, the ears and the forehead. This symptomatology is called "psoriatic crown" (on the photo). In the wake of the crust crack, and the sick areas of the skin (especially in children) is strongly rursus, and itching, which provides discomfort to the patient. Generally, the disease is seasonal development, it is sometimes possible to its appearance at the time of a sharp increase in nerve excitability in the patient. When the violation of the immune system may be the appearance of a fungal infection, aggravates the disease.
The diagnosis of the disease hampered by the fact that seborrheic psoriasis is similar to the seborrheic dermatitis symptoms, but seborrheic psoriasis lack of hair loss. Palpation (palpation) seborrheic psoriasis sets clear limits on the plates, and seborrheic dermatitis has no limits.
THE FORM WET. This type of disease develops in patients with endocrine disorders (diabetes, obesity). Pericardial psoriasis is often possible to observe in the elderly, it is possible symptomatology in the negative in the child.
The main characteristic of this type of psoriasis is the lack of white flakes of plaque on папулах. Instead, the rash can be covered with a yellow-brown crustae that caused excessive of the selection of the exudate (inflammatory liquid). It envelops the scales of the eruption. During the removal of this crust is exposed erosiva wet surface. Typical papules to psoriasis are not available and you receive edematous inflammation of the body area with vague boundaries.
Most often, the ruptions are located in the folds of the skin (genitals, the area of the armpits, under the breasts), flexura the surface of the hands and feet. If the patient has varicose veins, the symptoms of the exudative psoriasis of the lower extremities are amplified.
PSORIASIS OF The NAIL. This species is characterized by lesions of psoriasis clavus of plates in the form of bush hollow, which are called "symptom, thief". The nail becomes dull, the outside of the nail affected appears painful fold crushed. It is to be noted friability okolonogtevogo roller and the destruction of the structure of the nail. It should be noted that the same symptomatology observed during the development of onychomycosis, so need to make a correct diagnosis.