The cause of psoriasis is not fully understood. Medical and patient experience confirm the impossibility of transmission of the disease common. The disease most often occurs in the time between 18 and 25 years, comitatus hyperemia of 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;
- lois-attack;
- the common factors of the disease are stressful situations and emotional turmoil of the nerves;
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- lack of minerals and vitamins.
Symptoms of psoriasis stages
The disease can occur in 4 steps:- the original (at the beginning);
- progression;
- in place;
- regression.
Symptoms of psoriasis the initial (first) step. The primary symptoms of the disease in the initial stage occur in the emergence of epidermalibus papular rash. After 2-3 days, it forms silver-white scales which are easily removed (see. image). The first symptoms were classified development of the "point" of psoriasis.
Stage of progression. This stage is characterized by active growth and the subsequent fusion of the papular rash. Primary signs of disease are manifested in the characteristic flaking present in the Central part of the element without affecting the edge of the rim.
Secondary signs of progression characterized by the presence of symptoms kebne of (isomorphic edge reaction). When injuries papular area after 6-8 days (in accordance with the form of injuries) is part of the psoriasis. In addition, the phenomenon of kebne to detect if any of the psoriatic elements to provoke a strong scalpendi hands, elbows, legs, face.
The progressive stage is associated with painful itching, which is not typical for other stages. Generally, the progression can take 2-3 weeks and 3 (or more) months. During the stage of progression is recommended prophylactic administration of hormone therapy and external instruments.
Stage in place. This stage is gradually replaced and there is no specific time limit. It is capable of gracefully regression, the final form of the disease, but can proceed further. The characteristic symptoms of the stationary phase of psoriasis is a suspension of the growth of plaques and prevent the emergence of new papular rash on the face, hands, elbows, etc.
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In this case, there is increased peeling, 50% of patients experienced psevdoatrofiya classified Corolla Voronov. Peripheral pimples occur angustus strips of light-colored skin, which resembles tegimentum paper cigarettes.
Step regression. This stage completes the process of inflammation is characterized by a decrease in peeling, aequandi the Central part of the psoriatic elements, their further resolution (photo). psoriatic elements can be of different shapes (rings, trapeze, arc, etc.) and are classified as "geographical psoriasis."
There is another option regress the stage of the disease, when the rate began the peripheral part of the papules without the formation of scar tissue, and because of atrophic processes. In that part of the body, which is pimples can appearance of hyperpigmentation. Note that this separation of the disease, the options is conditional. Most often, the regress stage is determined by observing the patient's symptoms.
The symptoms of psoriasis depends on its form
Currently, there are many psoriatic arthritis forms, which differ from each other in external signs and symptoms of severity.
The most common forms of psoriasis:
- seborrheic psoriasis the scalp;
- vulgar;
- longus;
- rheumatoid arthritis and psoriatic arthritis
- exudative
- teardrop-shaped;
- TABULA
- nail;
- pustular;
- erythroderma.
Common forms of the disease are TABULA and psoriasis vulgaris. Be aware that any type of disease, there is redness and itching.
TABULA PSORIASIS. This disease develops quickly, sometimes the nervous system and occur in the acute symptoms. The disease begins with the appearance of a small amount of scaly papules, which are clearly demarcated and protrude slightly above the surface (pictured). In the future, papules may join together, forming plaque.
<4_img></4_img>This kind of psoriasis can affect large areas of skin, causing an uncomfortable condition of the patient. When injuries plaques can develop bacterial and fungal infections. Refinement of the disease diagnosis is carried out using a confirmation of "psoriatic triad".
VULGAR FORM OF PSORIASIS. This type of psoriasis is accompanied by active papular and family TABULA, peeling scalp, back, hands, elbows, feet. Rash covered with silvery-white loose stater for dolo and it's clear, bright red (pink) cross (pictured). When diagnosing the skin revealed positive signs of "psoriatic triad".
Rashes appear in the local areas (elbows, scalp, etc.) 1-2 weeks. This rash is called "guard" or "duty". For some patients the papules are converted into erythroderma. Very rarely vulgar form appears on the face and genital area.
SEBORRHEIC PSORIASIS. This disease is localized to the scalp and is characterized by severe flaking of the head, ears and forehead. Such symptoms is called "psoriaattista crown" (cf. image). In the future the shell to crack, and diseased skin (especially in children) strongly rursus and itchy, that is a great discomfort to the patient. As a rule, the disease has a seasonal development, it is sometimes possible to its appearance in connection with increased nervous excitability of the patient. Violation of the immune system, you may experience fungal infection, what aggravates the disease.
The disease diagnosis is difficult because seborrheic psoriasis, such as seborrheic dermatitis its symptoms, however, the seborrheic psoriasis is hair loss. Palpation (feeling) of seborrheic psoriasis is defined as a clear cross plaques, and seborrheic dermatitis is one of these limits.
EXUDATIVE FORM. This disease develops in patients with disorders of the endocrine system (diabetes, obesity). Exudative psoriasis often seen in the elderly, it is possible to harmful symptoms in the child.
The main feature of this form of psoriasis is without the white flaky deposits on the pimples. Instead, the rash can be covered with yellow-brown crusta, which triggers the excessive release of exudate (inflammatory liquid). It coats the scales of the rash. When you disconnect the edges of the exposed gap wet surface. Typical papules of psoriasis are not available, and appears edematous inflamed area of the body blurred boundaries.
Most commonly lesions are located in the skin folds (of the genitals, armpits, under the breast), flexura surface of the hands and feet. If the patient has varicose veins, the symptoms of exudative psoriasis of the lower extremities is improved.
THE NAIL PSORIASIS. This type of psoriasis is characterized by lesions of the clavus of the plates in the form of point depressions, called "a symptom of a thimble". The nail becomes dull, the outer edge of the nail looks inflamed rim. It should be noted friability okolonogtevogo roller and destroy the structure of the nail. It should be noted that similar symptoms have been observed with the development of onychomycosis, so requires careful diagnosis.