- Psoriasis - immune system alarm
- How to start
What is psoriasis? The most typical manifestation of this disease is a rash. There are many forms or types of psoriasis. The most common form is a simple psoriasis vulgaris, which, depending on the size of individual lesions may be guttate or nummular (plaque). There are also "reverse", seborrheic, exudative form of simple psoriasis, psoriasis of palms and soles, nail psoriasis
Nail psoriasis - a difficult problem
, Warty and papillomatous forms of psoriasis, psoriasis of the mucous membranes.
For severe psoriasis are joint psoriasis, pustular psoriasis
Pustular psoriasis - a severe form of the disease
and erythrodermic psoriasis.
Simple or vulgar psoriasis
How does this form of psoriasis? The rash of psoriasis can have a different character, on the basis of isolated and coin-drop-shaped form of a simple psoriasis.
Coin-psoriasis - the most common form of psoriasis, which appears as a typical scaly papules - raised above the skin surface of the skin covered by silvery-white scales. Papules coalesce into larger plaques that form different figures that occupy vast areas of the body. Favourite localization of plaques are extensor surface of the extremities (elbows, knees).
There is a "reverse" psoriasis when the rash is localized in the flexor surface of the limbs and skin folds. Eruptions in this case most often take the form of red spots with little peeling on the surface. This form of psoriasis often develop in folds of the skin in the groin, armpit, on the inner thighs, under the enlarged belly and breasts. The aggravation of the disease is often associated with trauma to the skin friction, sweating, or the development of her fungal and bacterial infections.
Droplet or spot psoriasis of the skin appears as a large number of small, raised above the surface of healthy skin, red-purple spot or drop-shaped rash. Drop psoriasis - psoriasis is on the body, sometimes it covers the entire surface. Often, the primary and the appearance of psoriasis develops after streptococcal infection.
One form of psoriasis vulgaris is exudative psoriasis
Exudative psoriasis - one of the dangerous consequences of the cold
. In this form, along with a typical scaling impurities resulting exudate cheshuykokorochki appear yellowish-gray color, which sometimes have conical, ustritseobrazny views.
Often found seborrheic psoriasis
Seborrheic psoriasis - correct diagnosis is important
At which precipitation apply to so-called seborrheic sites (psoriasis on the chest, back into the interscapular region, the scalp, face). Eruptions thus have a yellowish color, no scales. Is it possible to hair loss in psoriasis of the scalp? Normally psoriasis does not affect hair growth, hair loss is most often associated with some other reasons.
Psoriasis of palms and soles is more common in middle-aged persons engaged in physical labor. There are patchy, fan-shaped, circular, horny and calloused form.
Nail psoriasis occurs predominantly on the hands and is often associated with damage to the joints. Plates nails are affected in the form of a thimble. In severe cases, the nail plate is completely separated from the bed, from the free edge, around which formed a yellowish-brown border.
The most characteristic features of psoriatic lesions
For psoriatic lesions in the skin of all forms of the disease is characterized by the following triad of symptoms:
- The symptom of stearin spot - with their surface poskablivanii rash resembles stearic spot.
- Symptom terminal film - after papules scraped from the surface of all scales, opens shines a very thin film.
- Symptom bloody dew - in violation of the integrity of the thin film by its careful poskablivanii appear on the surface point drop of blood.
Characteristic features are peculiar and development of psoriatic lesions, which are three stages: progressive, stationary and retrogressive. But sometimes one and the same patient can be seen rashes that are simultaneously in three different stages.
Progressive stage distinguishes the appearance of new lesions, bright pink papules surrounded by a bright and saturated neshelushaschimsya slightly vague rim, itching and appearance of fresh rash at the site of skin irritation (for example, when combing - Koebner phenomenon). Any inflammatory diseases of the skin caused by irritation (dermatitis) will also contribute to the emergence of fresh rash, dermatitis and psoriasis therefore be mutually reinforcing.
For the stationary phase is characterized by the suspension of the progression of the process - he seems to be all the time in a single pore.
During regressing stage color papules and plaques pale, their infiltration decreases and elements rashes start to dissolve. If the process starts in the middle and goes toward the periphery, the annular shape formed. Sometimes the process of resorption is in the opposite direction - from the periphery to the center to form around the plaque whitish border - psevdoatroficheskogo rim. In place of the missing white depigmented lesions formed spots - psevdoleykoderma or psoriatic Leucoderma (leucoderma - a neuroendocrine disorder characterized by the appearance of the skin, deprived of pigmentation). Itch at this stage no Koebner phenomenon has also been observed.
Rare forms of psoriasis
A rare form of psoriasis vulgaris are warty and papillomatous that can sometimes degenerate into malignant tumors.
Very rare bullous form of psoriasis, which occurs always acute. Thus on the skin along with the typical psoriatic papules bubbles appear in different sizes.
It is extremely rare psoriasis mucous membranes. Psoriasis can occur on the lips, amazed as the hard palate, tongue, at least - the cheeks, eyelids, conjunctiva and cornea eye, the ear drum, the urethra and bladder. At the same time on the skin of patients also appear typical of psoriatic lesions.