Diathesis - congenital condition of the body, characterized by special predisposition to certain diseases. Diathesis is not an illness or pathological condition. When diathesis balance is disturbed functions and processes of metabolism of the body, changed its reactivity and adaptation to the external environment. Diathesis even ordinary stimuli cause abnormal reaction of the body and manifest themselves in the form of the disease. The latent period may continue indefinitely; to be identified diathesis may unexpectedly due to changing external conditions.
Most often there are three forms diathesis: in infants of the first years of life - exudative catarrhal (see Exudative diathesis), in children of preschool age - limfatica-gipoplasticheskaya diathesis (see), in children of school age - neuro-arthritic. Some believe these forms variants single diathesis, which vary according to age, however, the majority sees it as an independent state. The original form is allergic diathesis, combining a number of forms sensitivity of the organism to allergens (nutritional, infectious, and so on).
Prevention is in changing conditions, nutrition, lifestyle and tempering of the body, increasing its resilience. Treatment diathesis and diseases occurred on the background of diathesis, now conduct allergists in specialized departments of the General rules for the relevant disease with consideration of the peculiarities of the present form diathesis.

Diathesis, or children prurigo, is a fairly common chronic recurrent dermatosis. Prurigo can be detected in the infant or later the 2-3-year life.
Typical clinical sign of this disease is severe itching of the skin, followed by a rash of blisters and serous lenticular knots red or pink colours having on their surfaces tiny filled with a clear liquid bubbles. When suppuration (most often due to scratching) elements can occur pustules or even large boils. The rash may be accompanied by a slight fever, their development is attacks that last from several weeks to several months.
The first to suffer the skin of the face, especially the forehead, cheeks, chin, nose wings, the scalp. Often, the lesions are localized on the extensor surfaces of the upper and lower extremities. Sometimes there is an increase of femoral and inguinal lymph nodes. The skin on the affected areas thickens, loses elasticity, becomes rough. An important condition for recovery of the patient - identifying the allergen. However, the allergen could be recognized only when the disease lasts for a long time (up to several months, even years).
Treatment. Usually use of corticosteroid ointments (prednisolone, ftorokort, dermozolon, deperzolon sinalar flutsinar). These drugs are in most cases bring therapeutic effect, but it often short. Corticosteroid creams can be used not more than 2-3 months, after which it should move on to other drugs. Useful 1-2%boric-bismuth ointment on Naftalan or the same concentration of bismuth-tar ointment. Pre-should be wiped clean with alcohol surrounding healthy skin, then a thin layer to treat the rash. So, where possible (for example, in the extremities), it is better to RUB the ointment on, and put a bandage from gauze.
Inside is assigned vitamin a (concentrate) in the dose of 1 to 5 drops depending on age 3 times a day. Short-term (3-4 weeks) may be applied diphenhydramine and other antihistamines. On moist sites impose lotions from Golyanovo water: it should take 10 layers of gauze, to moisten with this water, squeeze and apply on the affected area (30-40 minutes - 4-5 times a day).
Many health workers when prurigo completely cancel baths and showers. However, this is wrong, because the skin of patients with prurigo or other rashes are a large number of pathogenic microorganisms that you want to delete. Cleaning baths and showers with baby soap should be done 1 time in 7-10 days.
The diet of children, sick of prurigo, must not include products that may serve as a food allergen (chocolate, honey, cocoa, eggs, citrus fruits, strawberries). It should be remembered that the same product from the same child Allergy, others not.
While adherence to diet and other preventive measures diathesis in children in most cases it is possible to interrupt, and comes complete recovery.