The reasons for the development of psoriasis is not fully exploited. The medicine and the experience of patients confirms the impossibility of transmission of the disease contact. Most commonly, the disease appears in a period of 18 to 25 years, comitatus hyperemia in the patient's body.
The causes of psoriasis:
- diseases of the endocrine system;
- the weakening of the immunity;
- genetic predisposition;
- the causes of psoriasis may include the development of viral infections;
- infestations bowel;
- the common factors of the development of the disease, which include situations of stress and upset in nervous the soil;
- lack in the body, trace elements and vitamins.
Psoriasis symptoms by stageThe disease may occur in 4 phases:
- the initial (previous);
- the progression;
The symptoms of psoriasis, initial (first) phase. Primary signs of disease in the initial stage of the product with appearance epidermalibus rash papular. After 2-3 days it are formed silver-white scales, that can be easily removed (see photo). The initial symptomatology is classified as the development of a "map" of psoriasis.
The stage of progression. This phase is characterized active growth and followed by merge of rash papular. The primary signs of progression are manifested in the characteristic of the shell, present in the central part of the element, so as to not affect периферический beater.
Secondary signs of progression characterized by the presence of a symptom Kebnera (isomorphic peripheral reaction). When травмировании papular area, through 6-8 days (according to the form of all the indications of an injury) occurs element of psoriasis. In addition, the phenomenon Kebnera may occur if any of the psoriatic elements cause a strong scalpendi in the hands, in the area of the elbows, feet, face,.
Progressing the phase is accompanied by unbearable itching, it is not characteristic for the other stages. As a general rule, the progression can last 2 to 3 weeks up to 3 (or more) months. During the stage of progression is recommended in the prophylactic and therapy hormonal outlaws of means.
The fixed phase. This step replaces the progressive and do not have certain time limits. She can perfectly pass on to the regression, the last form of the disease, but it is able to progress and move forward. The characteristic symptoms of the stage of psoriasis refers to the suspension of the growth plates and notice the emergence of a new rash papular, on face, in hands, in the area of cubits, and the т. д.</2_img>
In this case, you can occur the gain of the shell, in 50% of patients occurs psevdoatrofiya, классифицируемая, such as the toyota corolla Voronov. In the peripheral папулах occurs angustus range of clear skin, which reminds tegimentum the role of папиросы.
The phase of regression. This phase ends the process of inflammation, with a reduction of peel, aequandi the central part of psoriatic items with your new resolution (photo). psoriatic elements can be of different shapes (rings, line, arc and т. д.) and are classified as "geographic psoriasis".
There is another option regressus stage of the disease, when the resolution begins with the peripheral portion of papules, and does not constitute рубцовую tissue, and in the absence of atrophic processes. On the part of the body, where they were observed papules, you may receive the hyperpigmentation. You must consider that this division of diseases of the options is conditional. More often regressus stage is set for the observation method of симптоматикой of the patient.
The psoriasis symptoms depending on their form of
Currently, there are a number psoriatic forms, which differ from each of the other external signals and the weight of the symptomatology.
The most frequent are the following forms of psoriasis:
- dermatitis scalp psoriasis;
- arthritis psoriatic arthritis
- The blank slate
- of the nails;
Common forms of the disease are the blank slate and psoriasis vulgaris. One should consider that, for any type of disease can occur redness and itching on the skin.
TABULA PSORIASIS. This type of disease develops quickly, sometimes on a nervous soil and continues acute симптоматикой. Begins the disease with the appearance of a small amount of чешуйчатых papules, which are clearly limited, and slightly protrude above the surface (in the photo). In the future, papules may join together, forming plaque.<4_img></4_img>
This type of psoriasis is able to hurt vast terrains skin, causing nuisance to the condition of the patient. When травмировании cards perhaps the development of fungi and bacterial infection. The refinement of the diagnosis of the disease is done through the use of "confirmation" psoriatic triad".
VULGAR FORM OF PSORIASIS. This type of psoriasis accompanied by an active papular and genus blank slate, the outer layer of the scalp, waist, hands, elbows, feet. The rash covered with silver-white releasing statera, intentional and has a bright light red (pink) border (photo). When the diagnosis on the skin reveals the positive attributes of "psoriatic triad".
The eruptions appear in local local (on the elbows, scalp, and т. д.) through 1-2 weeks. The rash is called "guard dog" or "duty". Has a certain category of patients papules are converted into erythroderma. Very rarely vulgar form manifests itself on the face and in the genital region.
DERMATITIS PSORIASIS. This type of disease is localized to the scalp and is characterized by a strong shell region of the head, ears and forehead. This symptomatology is called "psoriatic crown" (see photo). Later fried crack cocaine, in patient areas of the skin (especially in children) strongly rursus, and with the itch, that gives a huge discomfort to the patient. Usually, the disease has a seasonal development, it is sometimes possible to occur in connection with the increase in nervous возбудимостью of the patient. In the case of violation of the immune system, you may experience a fungal infection, which greatly worsens the disease.
The diagnosis of the disease is difficult to the fact that seborrheic psoriasis is similar to seborrheic dermatitis, in your симптоматике, however, when seborrheic psoriasis lack to hair loss. By palpation (feeling) seborrheic psoriasis determines clear the border of the plates, and the seborrheic dermatitis does not have these limits.
ЭКССУДАТИВНАЯ WAY. This type of disease develops in patients with disorders of the endocrine system (diabetes, obesity). Экссудативный psoriasis can often be seen in older people, it is possible in the negative symptomatology of the child.
The main symptom of this type of psoriasis is the lack of white flakes of plaque in папулах. Instead, the itching can be charged yellow-brown crustae, which is caused by excessive allocation of exudate (inflammatory liquid). It involves flakes of acne. When you remove this chips, exposed to moisture of the surface erosive. Typical papules to psoriasis is missing, and you receive edematous inflamed area of the body with the tenuous border.
More often precipitation are in the folds of the skin (the genitals, the region of the armpit, below the bust), flexure surface of the hands and feet. If the patient is celebrated varicose veins, the symptoms экссудативного psoriasis lower limbs are amplified.
PSORIASIS OF THE NAILS. This type of psoriasis is characterized by lesions clavus cards in point form of the recesses, called "symptom thimble". The nail becomes dull, the edge of the victim of the nail appears воспаленная каемка. Notably, the friability okolonogtevogo cushion and the destruction of the structure of the nail. It should be noted that the similar symptomatology can occur with the development of onychomycosis, for this, it is necessary to carry out a careful diagnosis.