Various types of skin rashes always attract attention and concern. The causes of these lesions can be quite varied. In some cases, the rash completely harmless - it is just a cosmetic defect, which is easy to get rid of. In other situations, a rash may be a symptom of a serious infectious disease.

What a rash

Rash known as multiple lesions of the skin, which differ from the surrounding healthy skin texture, color and appearance. Also, rashes may also occur in the mucous membranes. Pathological elements arising on healthy skin, called the primary. Over time, in place of the primary elements of the rash may appear secondary. The most common primary elements of the rash are as follows:

• The bumps. Such elements ranging in size from five millimeters to a centimeter are located in the skin and protrude slightly above the surface. Typically, in tubercle skin changes color. The cavity inside the tubercle absent. Over time, on-site tubercle may remain a scar;
• Blisters. Such elements are slightly raised above the skin, have irregular or rounded shape and pink color. Usually accompanied by severe itching or burning. The cause of blisters - edema of the papillary dermis. Blisters can hold from a few seconds to several hours, then disappear, leaving no trace. The cause of blisters - an allergic reaction to external or internal stimuli;
• Papules (knots) - bespolostnoy elements with discolored skin. Can be located at different depths, to be inflammatory or non-inflammatory. Papules dimensions vary from one millimeter to three centimeters in diameter;
• Papule, vesicle is a small nodule, which is located on the surface of the bubble;
• Bubbles - elements of up to five millimeters in diameter, with a cavity that is filled with serous or hemorrhagic content serous. Bubbles may be located in or beneath the epidermis, single-chamber or multi-chamber be. After opening the bubble formed by erosion. Similar elements are larger than half a centimeter in diameter are called bubbles;
• Pustules - abdominal elements, pus-filled (sometimes also called pustules). Follicular pustules located around a hair-nefollikulyarnye - in the epidermis. If blisters occur deep in their place are formed ulcers with purulent bottom, and later - the scars. In the case of a shallow location pustules on their location is not secondary cells, although some may be retained while depigmentation or conversely, hyperpigmentation Hyperpigmentation - cosmetic defect or sign of the disease? ;
• Spots are characterized by a change in color of the skin. These elements can be inflammatory or non-inflammatory, vascular or pigment;
• Roseola - stain pale pink or red What color goes red: beware Not above the level of the skin and disappearing on pressure or tension of the skin. The size of such spots - up to five millimeters in diameter, round or irregular shape, the edges can be sharp or blurred. Roseola - a common symptom of many infectious diseases;
• Hemorrhage - a small hemorrhage as a result of damage to blood vessels in the skin. Depending on the type of hemorrhage have the form of points or spots of different sizes and shapes. As a rule, purpura Purpura - a signal of danger   - A symptom of a serious and sometimes life-threatening diseases.

Secondary elements of the rash

Primary cells rashes tend to evolve and change. So there are elements of the secondary rash. These include:

• Erosion. Most often an element occurs when the herpes, shingles, eczema and other diseases of the bubble. By curing the defect does not leave scars;
• Ulcer. This element reminds erosion, but is more deeply and leaves a scar after healing;
• Cork. Dried contents of pustules or vesicles and erosions and ulcers. Color crusts may vary depending on what kind of fluid (serous, bloody, pus) they formed;
• Tripe. The plot is thickening of the skin that remains after healing of the primary or secondary elements of an eruption, located in the deep layers of the skin. Typically, scars do not disappear on their own, they are removed surgically or using cosmetic procedures;
• Abrasion - superficial skin defects, the result of mechanical impact on the primary elements of the rash, such as scratching. Abrasions are prone to infection, which can lead to inflammation.

The reasons for the appearance of the rash

There are many varieties of the rash. Some of them are so specific that an experienced doctor can diagnose, barely glancing at the skin of the patient. At the same time, some kinds of scars can accompany a variety of diseases. In any case, the diagnosis should take into account the whole complex of symptoms.

While the diagnosis is not established, to improve upon the recommendation of a physician are used antihistamines, corticosteroids, anti-inflammatory drugs and demulcent.

Allergic rash

It is, for example, to eat "forbidden" foods, or improper use of cosmetic products - and now for the face and body appear red spots, which may be accompanied by unpleasant itching. In most cases these symptoms disappear completely, unless, of course, to cease contact with the allergen. If combing rash, then its location may appear abrasions, and in the case of infection - inflammation.

An allergic reaction is the reason for the appearance of blisters, similar to blisters from "burn" nettles. "Hives" at least once in his life occurred almost everyone as a reaction to an allergen or stress, but is particularly common disease in women from twenty to sixty years.

The rash of allergic origin can not be underestimated - it can be really dangerous, such as so-called "angioedema" also known as angioedema. In the case of the giant blisters and swelling on the face and neck should immediately seek medical help. Before the arrival of the doctors recommend taking an antihistamine.

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