The causes of psoriasis is not understood. Medicine and patient experience confirm the impossibility of the transmission of disease by contact. The disease most often appears 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;
- the genetic predisposition;
- causes of psoriasis may be to develop viral infections;
- parasitic invasion;
- common factors of the disease include situations of emotional stress and crisis of nerves;
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- deficiency in vitamins and minerals.
The symptoms of psoriasis stages
The disease may occur in 4 stages:- the initial (beginning);
- progression;
- stationary;
- regression.
The symptoms of psoriasis initial (first) phase. The main symptoms of the disease in the early stages occur with the appearance of epidermalibus papular eruption. After 2-3 days in the form of silver-white scales that are easily removed (see photo). Initial symptoms were classified as the development of the "point" of the psoriasis.
Stage of progression. This stage is characterized by active growth and the subsequent merger of the papular eruption. The main signs of progression are manifested in the characteristic of flaking present on the Central part of the element without damage to the periphery of the rim.
Secondary signs of progression is characterized by the presence of symptoms Kebnera (isomorphic peripheral reactions). When the lesion papular area after 6-8 days (in accordance with the form of lesions) there is an element of psoriasis. In addition, the phenomenon Kebnera observed, if any psoriatic elements cause strong scalpendi in the hands, elbows, legs, face.
Progressive phase is accompanied by itching pain, that is not typical of the other stages. In general, the progression can last 2-3 weeks and up to 3 (or more) months. During the stage of progression is recommended prophylactic administration of hormone therapy and external media.
Phase stationary. This stage replaces the progressive and does not have specific time limits. Is able to flow without problems in the regression, the final form of the illness, but able to advance more. Symptoms characteristic of the phase stationary psoriasis is the suspension of growth of the plaques and prevent the emergence of new papular eruption on the face, hands, elbows, etc.
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In this case, there has been an increase of the peel, 50% of patients occurs psevdoatrofiya classified as the Corolla Voronov. In peripheral papules occurs angustus strip of light-colored skin, looks like tegimentum role of cigarettes.
Phase of regression. This stage culminates the process of the inflammation with a characteristic decrease of the peel, aequandi the Central part of the psoriatic elements with more resolution (photo). psoriatic elements can be of different shapes (rings, trapeze, archery, etc.) and are classified as "geographical of psoriasis."
There is another option regressus phase of the disease, when the resolution starts with the part on the periphery of the papules without forming scar tissue, and in the absence of atrophic processes. In this part of the body where there are papules may appearance of coloration. Note that this separation of the disease of the options is conditional. More often regressus stage is determined through the observation of symptoms of the patient.
The symptoms of psoriasis according to their form
Currently, there are many psoriatic forms that differ from each other in external signs and the severity of symptoms.
The most common forms of psoriasis:
- psoriasis of the scalp;
- vulgar;
- longus;
- rheumatoid arthritis, psoriatic arthritis
- exudative
- tear-shaped;
- TABULA
- nails;
- pustular;
- erythroderma.
The forms of the disease are TABULA and psoriasis vulgaris. Be aware that any type of disease there is redness and itching.
TABULA PSORIASIS. This type of disease develops quickly, sometimes in the nervous system and occurs with symptoms of acute. The disease begins with the appearance of a small amount of scaly papules that are clearly limited and protrude slightly above the surface (in the picture). In the future, papules may join together, forming plaque.
<4_img></4_img>This kind of psoriasis are able to affect large areas of the skin, causing an uncomfortable condition of the patient. When the lesion plaques can develop bacterial and fungal infection. Refinement of the disease, the diagnosis is done through a confirmation of "psoriatic triad".
VULGAR FORM OF PSORIASIS. This type of psoriasis is accompanied by active papular and gender TABULA, flaking of the scalp, back, hands, elbows, feet. Rash covered with silvery-white loose statera intentionally and have a clear bright red colour (rosa) edge (in the photo). When the diagnosis of the skin revealed positive signs of "psoriatic triad".
Eruptions appear in the local areas (elbows, scalp, etc.) in 1-2 weeks. This wave is called "guard" or "duty". For some patients the papules turn into erythroderma. Very rarely vulgar form appears on the face and in the genital area.
PSORIASIS. This disease is localized in the scalp and is characterized by severe death of the head, the ears and the forehead. This symptoms is called "psoriatic crown" (see photo). In the future, the cracking of the bark, and patients of the skin (especially in children) strongly rursus and itching that is a great discomfort to the patient. As a general rule, the disease has a seasonal development, it is sometimes possible to its appearance in connection with increase of the excitability nerve of the patient. In violation of the immune system, which can suffer from a yeast infection, which aggravates the disease.
The disease and its diagnosis is difficult because the psoriasis as dermatitis your symptoms, however psoriasis there is loss of hair. By palpation (feeling) of psoriasis defines clear borders of the plates, and the dermatitis has these limits.
EXUDATIVE FORM. This disease develops in patients with disorders of the endocrine system (diabetes, obesity). Exudative psoriasis often seen in the elderly, possible symptoms adverse in the child.
The main characteristic of this form of psoriasis is the absence of white scaly deposits on the papules. On the other hand, the rash can be covered with yellow-brown crustae that caused by an excess release of exudate (inflammatory liquid). Coats the scales of the eruption. Remove the crust exposed to erosion wet surface. Typical papules of psoriasis are not available, and appears edematous swelling of the area of the body blurs the boundaries.
Most frequently the lesions are found in the folds of the skin (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 have been improved.
THE NAILS OF THE PSORIASIS. This type of psoriasis is characterized by lesions of the clavus plates in the form of point depressions, called "symptom thimble". The nail becomes opaque, the outer edge of the infected nail appears swelling the rim. 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, in a way that requires a careful diagnosis.